CISCO-SA-ISE-CMD-INJ-E2CUZCYZ

Vulnerability from csaf_cisco - Published: 2026-09-16 16:00 - Updated: 2026-09-16 16:00
Summary
Cisco Identity Services Engine Command Injection Vulnerabilities
Notes
Summary: Multiple vulnerabilities in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker to perform command injection attacks on an affected device and execute arbitrary commands as the root user. To exploit these vulnerabilities, the attacker must have valid administrative credentials. For more information about these vulnerabilities, see the Details ["#details"] section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is part of a group of advisories. For a complete list of the advisories and links to them, see Cisco Advance Notification for Publication of September 16, 2026, Security Advisories ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-notice-jfxK98ZP"]. In addition, for further documentation of improvements and fixes in Cisco Identity Services Engine, see Cisco Identity Services Engine Security Hardening Release: September 2026 ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-ise-XU5EwX5T"].
Vulnerable Products: These vulnerabilities affect Cisco ISE and Cisco ISE-PIC, regardless of device configuration. For information about which Cisco software releases are vulnerable, see the Fixed Software ["#fs"] section of this advisory.
Products Confirmed Not Vulnerable: Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by these vulnerabilities.
Details: The vulnerabilities are not dependent on one another. Exploitation of one of the vulnerabilities is not required to exploit the other vulnerability. In addition, a software release that is affected by one of the vulnerabilities may not be affected by the other vulnerability. Details about the vulnerabilities are as follows: CVE-2026-20305: Cisco ISE Command Injection Vulnerability A vulnerability in the diagnostic tools of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending crafted commands to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Bug ID(s): CSCwu43442 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu43442"] CVE ID: CVE-2026-20305 Security Impact Rating (SIR): Critical CVSS Base Score: 9.1 CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2026-20306: Cisco ISE Command Injection Vulnerability A vulnerability in the REST API of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending crafted commands to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a DoS condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Bug ID(s): CSCwu26077 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu26077"] CVE ID: CVE-2026-20306 Security Impact Rating (SIR): Critical CVSS Base Score: 9.1 CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Workarounds: There are no workarounds that address these vulnerabilities.
Fixed Software: Cisco considers any workarounds and mitigations (if applicable) to be temporary solutions until an upgrade to a fixed software release is available. To remediate these vulnerabilities and avoid future exposure as described in this advisory, Cisco strongly recommends that customers upgrade to the fixed software indicated in this advisory. Fixed Releases In the following tables, the left column lists Cisco software releases. The right column indicates whether a release is affected by the vulnerabilities that are described in this advisory and the first release that includes the fix for these vulnerabilities. Customers are advised to upgrade to an appropriate fixed software release ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"] as indicated in this section. Cisco ISE or ISE-PIC Release First Fixed Release for CVE-2026-20305 Earlier than 3.1 Migrate to a fixed release. 3.1 3.1 Patch 12 3.2 3.2 Patch 11 3.3 3.3 Patch 12 3.4 3.4 Patch 7 3.51 3.5 Patch 4 Cisco ISE or ISE-PIC Release First Fixed Release for CVE-2026-20306 3.3 and earlier Not vulnerable. 3.4 Patch 3 and earlier Not vulnerable. 3.4 Patch 4 and later 3.4 Patch 7 3.51 Patch 2 and earlier Not vulnerable. 3.51 Patch 3 3.5 Patch 4 1. Cisco ISE-PIC has reached the end-of-sale date. Release 3.4 is the last supported release. For instructions on upgrading a device, see the Upgrade Guides on the Cisco Identity Service Engine ["https://www.cisco.com/c/en/us/support/security/identity-services-engine/series.html"] support page. The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.
Vulnerability Policy: To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy ["http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco. For additional information on Cisco's vulnerability management, disclosure cadence, and software patching strategy, see Cisco's Transition to a Risk-Based Vulnerability Disclosure Model ["https://sec.cloudapps.cisco.com/security/center/resources/risk-based-disclosure"].
Exploitation and Public Announcements: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
Source: Cisco would like to thank Jasper Westerman, Yanick de Pater, and Harm Blankers of REQON B.V. for reporting these vulnerabilities.
Legal Disclaimer: SOFTWARE DOWNLOADS AND TECHNICAL SUPPORT The Cisco Support and Downloads ["https://www.cisco.com/c/en/us/support/index.html"] page on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool. Please note that customers may download only software that was procured from Cisco directly or through a Cisco authorized reseller or partner and for which the license is still valid. Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco Technical Assistance Center (TAC) ["https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"]. Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade. When considering software upgrades ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"], customers are advised to regularly consult the advisories ["https://www.cisco.com/go/psirt"] for the relevant Cisco products to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) ["https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"] or their contracted maintenance providers. LEGAL DISCLAIMER DETAILS CISCO DOES NOT MAKE ANY EXPRESS OR IMPLIED GUARANTEES OR WARRANTIES OF ANY KIND, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, CISCO DOES NOT GUARANTEE THE ACCURACY OR COMPLETENESS OF THIS INFORMATION. THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. Copies or summaries of the information contained in this Security Advisory may lack important information or contain factual errors. Customers are advised to visit the Cisco Security Advisories ["https://www.cisco.com/go/psirt"] page for the most recent version of this Security Advisory. The Cisco Product Security Incident Response Team (PSIRT) assesses only the affected and fixed release information that is documented in this advisory. See the Cisco Security Vulnerability Policy ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"] for more information.
Affected products
Product Identifier Version Remediation
Unresolved product id: CSAFPID-292424 —
Vendor Fix fix
3.2.0
Cisco / Cisco ISE Passive Identity Connector
—
Vendor Fix fix
3.1.0
Cisco / Cisco ISE Passive Identity Connector
—
Vendor Fix fix
3.3.0
Cisco / Cisco ISE Passive Identity Connector
—
Vendor Fix fix
3.4.0
Cisco / Cisco ISE Passive Identity Connector
—
Vendor Fix fix
Unresolved product id: CSAFPID-111903 —
Vendor Fix fix
3.1.0
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.1.0 p1
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.1.0 p3
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.1.0 p2
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.1.0 p4
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.2.0
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.1.0 p5
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.2.0 p1
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.1.0 p6
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.2.0 p2
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.1.0 p7
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.3.0
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.2.0 p3
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.2.0 p4
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.1.0 p8
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.2.0 p5
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.1.0 p9
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.2.0 p6
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.3 Patch 2
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.3 Patch 1
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.3 Patch 3
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.4.0
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.2.0 p7
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.3 Patch 4
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.4 Patch 1
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.1.0 p10
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.3 Patch 5
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.3 Patch 6
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.4 Patch 2
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.3 Patch 7
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.4 Patch 3
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.5.0
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.2 Patch 8
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.3 Patch 8
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.4 Patch 4
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.3 Patch 9
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.5 Patch 1
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.2 Patch 9
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.4 Patch 5
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.3 Patch 10
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.5 Patch 2
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.5 Patch 3
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.3 Patch 11
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.1.0 p11
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.2 Patch 10
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.4 Patch 6
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
Affected products
Product Identifier Version Remediation
Unresolved product id: CSAFPID-111903 —
Vendor Fix fix
3.4 Patch 4
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.4 Patch 5
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.5 Patch 3
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
3.4 Patch 6
Cisco / Cisco Identity Services Engine Software
—
Vendor Fix fix
Unresolved product id: CSAFPID-292424 —
Vendor Fix fix
3.4.0
Cisco / Cisco ISE Passive Identity Connector
—
Vendor Fix fix
Acknowledgments

{
  "document": {
    "acknowledgments": [
      {
        "summary": "Cisco would like to thank Jasper Westerman, Yanick de Pater, and Harm Blankers of REQON B.V. for reporting these vulnerabilities."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "Multiple vulnerabilities in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker to perform command injection attacks on an affected device and execute arbitrary commands as the root user. To exploit these vulnerabilities, the attacker must have valid administrative credentials.\r\n\r\nFor more information about these vulnerabilities, see the Details [\"#details\"] section of this advisory.\r\n\r\nCisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.\r\n\r\n\r\n\r\nThis advisory is part of a group of advisories. For a complete list of the advisories and links to them, see Cisco Advance Notification for Publication of September 16, 2026, Security Advisories [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-notice-jfxK98ZP\"]. In addition, for further documentation of improvements and fixes in Cisco Identity Services Engine, see Cisco Identity Services Engine Security Hardening Release: September 2026 [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-ise-XU5EwX5T\"].",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "These vulnerabilities affect Cisco ISE and Cisco ISE-PIC, regardless of device configuration.\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.",
        "title": "Vulnerable Products"
      },
      {
        "category": "general",
        "text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by these vulnerabilities.",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "The vulnerabilities are not dependent on one another. Exploitation of one of the vulnerabilities is not required to exploit the other vulnerability. In addition, a software release that is affected by one of the vulnerabilities may not be affected by the other vulnerability.\r\n\r\nDetails about the vulnerabilities are as follows:\r\n\r\nCVE-2026-20305: Cisco ISE Command Injection Vulnerability\r\n\r\nA vulnerability in the diagnostic tools of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit this vulnerability, the attacker must have valid administrative credentials.\r\n\r\nThis vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending crafted commands to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\nBug ID(s): CSCwu43442 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu43442\"]\r\nCVE ID: CVE-2026-20305\r\nSecurity Impact Rating (SIR): Critical\r\nCVSS Base Score: 9.1\r\nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H\r\n\r\nCVE-2026-20306: Cisco ISE Command Injection Vulnerability\r\n\r\nA vulnerability in the REST API of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit this vulnerability, the attacker must have valid administrative credentials.\r\n\r\nThis vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending crafted commands to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a DoS condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\nBug ID(s): CSCwu26077 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu26077\"]\r\nCVE ID: CVE-2026-20306\r\nSecurity Impact Rating (SIR): Critical\r\nCVSS Base Score: 9.1\r\nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
        "title": "Details"
      },
      {
        "category": "general",
        "text": "There are no workarounds that address these vulnerabilities.",
        "title": "Workarounds"
      },
      {
        "category": "general",
        "text": "Cisco considers any workarounds and mitigations (if applicable) to be temporary solutions until an upgrade to a fixed software release is available. To remediate these vulnerabilities and avoid future exposure as described in this advisory, Cisco strongly recommends that customers upgrade to the fixed software indicated in this advisory.\r\n      Fixed Releases\r\nIn the following tables, the left column lists Cisco software releases. The right column indicates whether a release is affected by the vulnerabilities that are described in this advisory and the first release that includes the fix for these vulnerabilities. Customers are advised to upgrade to an appropriate fixed software release [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"] as indicated in this section.\r\n        Cisco ISE or ISE-PIC Release  First Fixed Release for CVE-2026-20305          Earlier than 3.1  Migrate to a fixed release.      3.1  3.1 Patch 12      3.2  3.2 Patch 11      3.3  3.3 Patch 12      3.4  3.4 Patch 7      3.51  3.5 Patch 4\r\n         Cisco ISE or ISE-PIC Release  First Fixed Release for CVE-2026-20306          3.3 and earlier   Not vulnerable.      3.4 Patch 3 and earlier  Not vulnerable.      3.4 Patch 4 and later  3.4 Patch 7      3.51 Patch 2 and earlier  Not vulnerable.      3.51 Patch 3  3.5 Patch 4\r\n1. Cisco ISE-PIC has reached the end-of-sale date. Release 3.4 is the last supported release.\r\nFor instructions on upgrading a device, see the Upgrade Guides on the Cisco Identity Service Engine [\"https://www.cisco.com/c/en/us/support/security/identity-services-engine/series.html\"] support page.\r\n\r\nThe Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.",
        "title": "Fixed Software"
      },
      {
        "category": "general",
        "text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.\r\n\r\nFor additional information on Cisco\u0027s vulnerability management, disclosure cadence, and software patching strategy, see Cisco\u0027s Transition to a Risk-Based Vulnerability Disclosure Model [\"https://sec.cloudapps.cisco.com/security/center/resources/risk-based-disclosure\"].",
        "title": "Vulnerability Policy"
      },
      {
        "category": "general",
        "text": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "Cisco would like to thank Jasper Westerman, Yanick de Pater, and Harm Blankers of REQON B.V. for reporting these vulnerabilities.",
        "title": "Source"
      },
      {
        "category": "legal_disclaimer",
        "text": "SOFTWARE DOWNLOADS AND TECHNICAL SUPPORT\r\n\r\nThe Cisco Support and Downloads [\"https://www.cisco.com/c/en/us/support/index.html\"] page on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool. Please note that customers may download only software that was procured from Cisco directly or through a Cisco authorized reseller or partner and for which the license is still valid.\r\n\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco Technical Assistance Center (TAC) [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]. Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n\r\nWhen considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories [\"https://www.cisco.com/go/psirt\"] for the relevant Cisco products to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"] or their contracted maintenance providers.\r\nLEGAL DISCLAIMER DETAILS\r\n\r\nCISCO DOES NOT MAKE ANY EXPRESS OR IMPLIED GUARANTEES OR WARRANTIES OF ANY KIND, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, CISCO DOES NOT GUARANTEE THE ACCURACY OR COMPLETENESS OF THIS INFORMATION. THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nCopies or summaries of the information contained in this Security Advisory may lack important information or contain factual errors. Customers are advised to visit the Cisco Security Advisories [\"https://www.cisco.com/go/psirt\"] page for the most recent version of this Security Advisory. The Cisco Product Security Incident Response Team (PSIRT) assesses only the affected and fixed release information that is documented in this advisory. See the Cisco Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"] for more information.",
        "title": "Legal Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@cisco.com",
      "issuing_authority": "Cisco PSIRT",
      "name": "Cisco",
      "namespace": "https://wwww.cisco.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "Cisco Identity Services Engine Command Injection Vulnerabilities",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-cmd-inj-e2CuZCYZ"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "Cisco Advance Notification for Publication of September 16, 2026, Security Advisories",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-notice-jfxK98ZP"
      },
      {
        "category": "external",
        "summary": "Cisco Identity Services Engine Security Hardening Release: September 2026",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-ise-XU5EwX5T"
      },
      {
        "category": "external",
        "summary": "CSCwu43442",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu43442"
      },
      {
        "category": "external",
        "summary": "CSCwu26077",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu26077"
      },
      {
        "category": "external",
        "summary": "fixed software release",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "Cisco Identity Service Engine",
        "url": "https://www.cisco.com/c/en/us/support/security/identity-services-engine/series.html"
      },
      {
        "category": "external",
        "summary": "Security Vulnerability Policy",
        "url": "http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "Cisco\u0027s Transition to a Risk-Based Vulnerability Disclosure Model",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/risk-based-disclosure"
      },
      {
        "category": "external",
        "summary": "Cisco Support and Downloads",
        "url": "https://www.cisco.com/c/en/us/support/index.html"
      },
      {
        "category": "external",
        "summary": "Cisco Technical Assistance Center (TAC)",
        "url": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"
      },
      {
        "category": "external",
        "summary": "the advisories",
        "url": "https://www.cisco.com/go/psirt"
      }
    ],
    "title": "Cisco Identity Services Engine Command Injection Vulnerabilities",
    "tracking": {
      "current_release_date": "2026-09-16T16:00:00+00:00",
      "generator": {
        "date": "2026-09-16T16:04:13+00:00",
        "engine": {
          "name": "TVCE"
        }
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        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.3 Patch 6 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-305299:277469"
        },
        "product_reference": "CSAFPID-305299",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.3 Patch 7 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-306464:277469"
        },
        "product_reference": "CSAFPID-306464",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.3 Patch 8 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-306843:277469"
        },
        "product_reference": "CSAFPID-306843",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.3 Patch 9 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-306924:277469"
        },
        "product_reference": "CSAFPID-306924",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.3 Patch 10 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-307183:277469"
        },
        "product_reference": "CSAFPID-307183",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.3 Patch 11 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-308420:277469"
        },
        "product_reference": "CSAFPID-308420",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.4.0 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-302760:277469"
        },
        "product_reference": "CSAFPID-302760",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.4 Patch 1 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-303199:277469"
        },
        "product_reference": "CSAFPID-303199",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.4 Patch 2 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-305360:277469"
        },
        "product_reference": "CSAFPID-305360",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.4 Patch 3 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-306583:277469"
        },
        "product_reference": "CSAFPID-306583",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.4 Patch 4 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-306844:277469"
        },
        "product_reference": "CSAFPID-306844",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.4 Patch 5 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-307182:277469"
        },
        "product_reference": "CSAFPID-307182",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.4 Patch 6 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-308532:277469"
        },
        "product_reference": "CSAFPID-308532",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.5.0 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-306647:277469"
        },
        "product_reference": "CSAFPID-306647",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.5 Patch 1 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-306925:277469"
        },
        "product_reference": "CSAFPID-306925",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.5 Patch 2 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-307184:277469"
        },
        "product_reference": "CSAFPID-307184",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Identity Services Engine Software 3.5 Patch 3 when installed on Cisco Identity Services Engine",
          "product_id": "CSAFPID-307185:277469"
        },
        "product_reference": "CSAFPID-307185",
        "relates_to_product_reference": "CSAFPID-277469"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco ISE Passive Identity Connector 3.2.0 when installed on Cisco ISE Passive Identity Connector",
          "product_id": "CSAFPID-302648:292425"
        },
        "product_reference": "CSAFPID-302648",
        "relates_to_product_reference": "CSAFPID-292425"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco ISE Passive Identity Connector 3.1.0 when installed on Cisco ISE Passive Identity Connector",
          "product_id": "CSAFPID-302650:292425"
        },
        "product_reference": "CSAFPID-302650",
        "relates_to_product_reference": "CSAFPID-292425"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco ISE Passive Identity Connector 3.3.0 when installed on Cisco ISE Passive Identity Connector",
          "product_id": "CSAFPID-302652:292425"
        },
        "product_reference": "CSAFPID-302652",
        "relates_to_product_reference": "CSAFPID-292425"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco ISE Passive Identity Connector 3.4.0 when installed on Cisco ISE Passive Identity Connector",
          "product_id": "CSAFPID-302772:292425"
        },
        "product_reference": "CSAFPID-302772",
        "relates_to_product_reference": "CSAFPID-292425"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-20305",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwu43442"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-292424",
          "CSAFPID-302648",
          "CSAFPID-302650",
          "CSAFPID-302652",
          "CSAFPID-302772",
          "CSAFPID-111903",
          "CSAFPID-284330",
          "CSAFPID-286349",
          "CSAFPID-286928",
          "CSAFPID-286939",
          "CSAFPID-290540",
          "CSAFPID-290542",
          "CSAFPID-292629",
          "CSAFPID-292670",
          "CSAFPID-295313",
          "CSAFPID-295423",
          "CSAFPID-299948",
          "CSAFPID-299950",
          "CSAFPID-300260",
          "CSAFPID-300852",
          "CSAFPID-301107",
          "CSAFPID-301471",
          "CSAFPID-301743",
          "CSAFPID-301744",
          "CSAFPID-302653",
          "CSAFPID-302654",
          "CSAFPID-302655",
          "CSAFPID-302760",
          "CSAFPID-302991",
          "CSAFPID-303023",
          "CSAFPID-303199",
          "CSAFPID-303301",
          "CSAFPID-303899",
          "CSAFPID-305299",
          "CSAFPID-305360",
          "CSAFPID-306464",
          "CSAFPID-306583",
          "CSAFPID-306647",
          "CSAFPID-306842",
          "CSAFPID-306843",
          "CSAFPID-306844",
          "CSAFPID-306924",
          "CSAFPID-306925",
          "CSAFPID-307060",
          "CSAFPID-307182",
          "CSAFPID-307183",
          "CSAFPID-307184",
          "CSAFPID-307185",
          "CSAFPID-308420",
          "CSAFPID-308530",
          "CSAFPID-308531",
          "CSAFPID-308532"
        ]
      },
      "release_date": "2026-09-16T16:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-111903",
            "CSAFPID-284330",
            "CSAFPID-286349",
            "CSAFPID-286928",
            "CSAFPID-286939",
            "CSAFPID-290540",
            "CSAFPID-290542",
            "CSAFPID-292629",
            "CSAFPID-292670",
            "CSAFPID-295313",
            "CSAFPID-295423",
            "CSAFPID-299948",
            "CSAFPID-299950",
            "CSAFPID-300260",
            "CSAFPID-300852",
            "CSAFPID-301107",
            "CSAFPID-301471",
            "CSAFPID-301743",
            "CSAFPID-301744",
            "CSAFPID-302653",
            "CSAFPID-302654",
            "CSAFPID-302655",
            "CSAFPID-302760",
            "CSAFPID-302991",
            "CSAFPID-303023",
            "CSAFPID-303199",
            "CSAFPID-303301",
            "CSAFPID-303899",
            "CSAFPID-305299",
            "CSAFPID-305360",
            "CSAFPID-306464",
            "CSAFPID-306583",
            "CSAFPID-306647",
            "CSAFPID-306842",
            "CSAFPID-306843",
            "CSAFPID-306844",
            "CSAFPID-306924",
            "CSAFPID-306925",
            "CSAFPID-307060",
            "CSAFPID-307182",
            "CSAFPID-307183",
            "CSAFPID-307184",
            "CSAFPID-307185",
            "CSAFPID-308420",
            "CSAFPID-308530",
            "CSAFPID-308531",
            "CSAFPID-308532",
            "CSAFPID-292424",
            "CSAFPID-302648",
            "CSAFPID-302650",
            "CSAFPID-302652",
            "CSAFPID-302772"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-292424",
            "CSAFPID-302648",
            "CSAFPID-302650",
            "CSAFPID-302652",
            "CSAFPID-302772",
            "CSAFPID-111903",
            "CSAFPID-284330",
            "CSAFPID-286349",
            "CSAFPID-286928",
            "CSAFPID-286939",
            "CSAFPID-290540",
            "CSAFPID-290542",
            "CSAFPID-292629",
            "CSAFPID-292670",
            "CSAFPID-295313",
            "CSAFPID-295423",
            "CSAFPID-299948",
            "CSAFPID-299950",
            "CSAFPID-300260",
            "CSAFPID-300852",
            "CSAFPID-301107",
            "CSAFPID-301471",
            "CSAFPID-301743",
            "CSAFPID-301744",
            "CSAFPID-302653",
            "CSAFPID-302654",
            "CSAFPID-302655",
            "CSAFPID-302760",
            "CSAFPID-302991",
            "CSAFPID-303023",
            "CSAFPID-303199",
            "CSAFPID-303301",
            "CSAFPID-303899",
            "CSAFPID-305299",
            "CSAFPID-305360",
            "CSAFPID-306464",
            "CSAFPID-306583",
            "CSAFPID-306647",
            "CSAFPID-306842",
            "CSAFPID-306843",
            "CSAFPID-306844",
            "CSAFPID-306924",
            "CSAFPID-306925",
            "CSAFPID-307060",
            "CSAFPID-307182",
            "CSAFPID-307183",
            "CSAFPID-307184",
            "CSAFPID-307185",
            "CSAFPID-308420",
            "CSAFPID-308530",
            "CSAFPID-308531",
            "CSAFPID-308532"
          ]
        }
      ],
      "title": "Cisco Identity Services Engine Command Injection Vulnerability"
    },
    {
      "cve": "CVE-2026-20306",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwu26077"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-111903",
          "CSAFPID-306844",
          "CSAFPID-307182",
          "CSAFPID-307185",
          "CSAFPID-308532",
          "CSAFPID-292424",
          "CSAFPID-302772"
        ]
      },
      "release_date": "2026-09-16T16:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-111903",
            "CSAFPID-306844",
            "CSAFPID-307182",
            "CSAFPID-307185",
            "CSAFPID-308532",
            "CSAFPID-292424",
            "CSAFPID-302772"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-111903",
            "CSAFPID-306844",
            "CSAFPID-307182",
            "CSAFPID-307185",
            "CSAFPID-308532",
            "CSAFPID-292424",
            "CSAFPID-302772"
          ]
        }
      ],
      "title": "Cisco Identity Services Engine Command Injection Vulnerability"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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