CVE-2026-20133 (GCVE-0-2026-20133)
Vulnerability from cvelistv5 – Published: 2026-02-25 16:13 – Updated: 2026-04-22 15:31Summary
A vulnerability in Cisco Catalyst SD-WAN Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system.
This vulnerability is due to insufficient file system restrictions. An authenticated attacker with netadmin privileges could exploit this vulnerability by accessing the vshell of an affected system. A successful exploit could allow the attacker to read sensitive information on the underlying operating system.
Severity
6.5 (Medium)
SSVC
Exploitation: active
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-22 13:54 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/c… | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Catalyst SD-WAN Manager |
Affected:
17.2.6
Affected: 17.2.7 Affected: 17.2.8 Affected: 17.2.9 Affected: 17.2.10 Affected: 17.2.4 Affected: 17.2.5 Affected: 18.3.1.1 Affected: 18.3.3.1 Affected: 18.3.3 Affected: 18.3.4 Affected: 18.3.5 Affected: 18.3.7 Affected: 18.3.8 Affected: 18.3.6.1 Affected: 18.3.1 Affected: 18.3.0 Affected: 18.4.0.1 Affected: 18.4.3 Affected: 18.4.302 Affected: 18.4.303 Affected: 18.4.4 Affected: 18.4.5 Affected: 18.4.0 Affected: 18.4.1 Affected: 18.4.6 Affected: 19.2.0 Affected: 19.2.097 Affected: 19.2.099 Affected: 19.2.1 Affected: 19.2.2 Affected: 19.2.3 Affected: 19.2.31 Affected: 19.2.929 Affected: 19.2.4 Affected: 20.1.1.1 Affected: 20.1.12 Affected: 20.1.1 Affected: 20.1.2 Affected: 20.1.3 Affected: 19.3.0 Affected: 19.1.0 Affected: 18.2.0 Affected: 20.3.1 Affected: 20.3.2 Affected: 20.3.2.1 Affected: 20.3.3 Affected: 20.3.3.1 Affected: 20.3.4 Affected: 20.3.4.1 Affected: 20.3.4.2 Affected: 20.3.5 Affected: 20.3.6 Affected: 20.3.7 Affected: 20.3.7.1 Affected: 20.3.4.3 Affected: 20.3.5.1 Affected: 20.3.7.2 Affected: 20.3.8 Affected: 20.4.1 Affected: 20.4.1.1 Affected: 20.4.1.2 Affected: 20.4.2 Affected: 20.4.2.2 Affected: 20.4.2.1 Affected: 20.4.2.3 Affected: 20.5.1 Affected: 20.5.1.2 Affected: 20.5.1.1 Affected: 20.6.1 Affected: 20.6.1.1 Affected: 20.6.2.1 Affected: 20.6.2.2 Affected: 20.6.2 Affected: 20.6.3 Affected: 20.6.3.1 Affected: 20.6.4 Affected: 20.6.5 Affected: 20.6.5.1 Affected: 20.6.5.3 Affected: 20.6.1.2 Affected: 20.6.3.2 Affected: 20.6.4.1 Affected: 20.6.5.2 Affected: 20.6.5.4 Affected: 20.6.3.3 Affected: 20.6.4.2 Affected: 20.6.3.0.45 Affected: 20.6.3.0.46 Affected: 20.6.3.0.47 Affected: 20.6.3.4 Affected: 20.6.4.0.21 Affected: 20.6.5.1.10 Affected: 20.6.5.1.11 Affected: 20.6.5.1.7 Affected: 20.6.5.1.9 Affected: 20.6.5.2.4 Affected: 20.6.5.5 Affected: 20.6.5.2.8 Affected: 20.6.5.1.13 Affected: 20.6.6 Affected: 20.6.7 Affected: 20.6.8 Affected: 20.7.1 Affected: 20.7.1.1 Affected: 20.7.2 Affected: 20.8.1 Affected: 20.9.1 Affected: 20.9.2 Affected: 20.9.2.1 Affected: 20.9.3 Affected: 20.9.3.1 Affected: 20.9.2.3 Affected: 20.9.3.0.12 Affected: 20.9.3.0.16 Affected: 20.9.3.0.17 Affected: 20.9.3.0.18 Affected: 20.9.3.0.20 Affected: 20.9.3.0.21 Affected: 20.9.3.2 Affected: 20.9.3.2_LI_Images Affected: 20.9.4 Affected: 20.9.4_LI_Images Affected: 20.9.3.0.23 Affected: 20.9.4.1 Affected: 20.9.5 Affected: 20.9.5.1 Affected: 20.9.5.2 Affected: 20.9.6 Affected: 20.9.5.3 Affected: 20.9.7 Affected: 20.9.7.1 Affected: 20.9.8 Affected: 20.10.1 Affected: 20.10.1.1 Affected: 20.10.1.2 Affected: 20.11.1 Affected: 20.11.1.1 Affected: 20.11.1.2 Affected: 20.12.1 Affected: 20.12.1_LI_Images Affected: 20.12.2 Affected: 20.12.3 Affected: 20.12.3.1 Affected: 20.12.4 Affected: 20.12.4.1 Affected: 20.12.5 Affected: 20.12.5.1 Affected: 20.12.5.2 Affected: 20.12.6 Affected: 20.13.1 Affected: 20.14.1 Affected: 20.15.1 Affected: 20.15.2 Affected: 20.15.3 Affected: 20.15.3.1 Affected: 20.15.4 Affected: 20.15.4.1 Affected: 20.16.1 Affected: 20.18.1 Affected: 20.18.2 |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 457b659c-12f4-42d1-993f-28a98e893df7
Exploited: Yes
Timestamps
First Seen: 2026-04-20
Asserted: 2026-04-20
Scope
Notes: Cisco Catalyst SD-WAN Manager Exposure of Sensitive Information to an Unauthorized Actor Vulnerability | Affected: Cisco / Catalyst SD-WAN Manager | Description: Cisco Catalyst SD-WAN Manager contains an exposure of sensitive information to an unauthorized actor vulnerability that could allow remote attackers to view sensitive information on affected systems. | Required action: Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s “Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available. | Due date: 2026-04-23 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): CISA Mitigation Instructions: https://www.cisa.gov/news-events/directives/ed-26-03-mitigate-vulnerabilities-cisco-sd-wan-systems ; https://www.cisa.gov/news-events/directives/supplemental-direction-ed-26-03-hunt-and-hardening-guidance-cisco-sd-wan-systems ; https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v ; https://nvd.nist.gov/vuln/detail/CVE-2026-20133
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-200 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Catalyst SD-WAN Manager |
| Due Date | 2026-04-23 |
| Date Added | 2026-04-20 |
| Vendorproject | Cisco |
| Vulnerabilityname | Cisco Catalyst SD-WAN Manager Exposure of Sensitive Information to an Unauthorized Actor Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-10-02 08:09 CEST
| Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: e0796736-39fb-45bc-be38-f4f732870fa1
Exploited: Yes
Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: A vulnerability in Cisco Catalyst SD-WAN Software could allow an unauthenticated, remote attacker to view sensitive information on an affected... | Affected: Cisco / Cisco Catalyst SD-WAN Manager | CVSS: 6.5 (MEDIUM) | EPSS: 0.31829 | Used in malware: unknown | Listed 1 day ahead of CISA KEV | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | A vulnerability in Cisco Catalyst SD-WAN Software could allow an unauthenticated, remote attacker to view sensitive information on an affected... |
| Cve Id | CVE-2026-20133 |
| Vendor | Cisco |
| Ghsa Id | None |
| Product | Cisco Catalyst SD-WAN Manager |
| Added Date | 2026-06-01T13:22:22.662Z |
| Cvss Score | 6.5 |
| Epss Score | 0.31829 |
| Previous Ids | |
| Cvss Severity | MEDIUM |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.98252 |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2026-20133 |
| Ahead Of Cisa Kev |
|
| Not Yet In Cisa Kev | False |
References
Created: 2026-10-02 09:09 CEST
| Updated: 2026-10-02 09:09 CEST
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"value": "A vulnerability in Cisco Catalyst SD-WAN Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system.\r\n\r This vulnerability is due to insufficient file system restrictions. An authenticated attacker with netadmin privileges could exploit this vulnerability by accessing the vshell of an affected system. A successful exploit could allow the attacker to read sensitive information on the underlying operating system."
}
],
"exploits": [
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"value": "In April 2026, the Cisco PSIRT became aware of active exploitation of the vulnerability that is described in CVE-2026-20133. Cisco strongly recommends that customers upgrade to a fixed software release to remediate these vulnerabilities."
}
],
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},
{
"status": "affected",
"version": "18.4.0.1"
},
{
"status": "affected",
"version": "18.4.3"
},
{
"status": "affected",
"version": "18.4.302"
},
{
"status": "affected",
"version": "18.4.303"
},
{
"status": "affected",
"version": "18.4.4"
},
{
"status": "affected",
"version": "18.4.5"
},
{
"status": "affected",
"version": "18.4.0"
},
{
"status": "affected",
"version": "18.4.1"
},
{
"status": "affected",
"version": "18.4.6"
},
{
"status": "affected",
"version": "19.2.0"
},
{
"status": "affected",
"version": "19.2.097"
},
{
"status": "affected",
"version": "19.2.099"
},
{
"status": "affected",
"version": "19.2.1"
},
{
"status": "affected",
"version": "19.2.2"
},
{
"status": "affected",
"version": "19.2.3"
},
{
"status": "affected",
"version": "19.2.31"
},
{
"status": "affected",
"version": "19.2.929"
},
{
"status": "affected",
"version": "19.2.4"
},
{
"status": "affected",
"version": "20.1.1.1"
},
{
"status": "affected",
"version": "20.1.12"
},
{
"status": "affected",
"version": "20.1.1"
},
{
"status": "affected",
"version": "20.1.2"
},
{
"status": "affected",
"version": "20.1.3"
},
{
"status": "affected",
"version": "19.3.0"
},
{
"status": "affected",
"version": "19.1.0"
},
{
"status": "affected",
"version": "18.2.0"
},
{
"status": "affected",
"version": "20.3.1"
},
{
"status": "affected",
"version": "20.3.2"
},
{
"status": "affected",
"version": "20.3.2.1"
},
{
"status": "affected",
"version": "20.3.3"
},
{
"status": "affected",
"version": "20.3.3.1"
},
{
"status": "affected",
"version": "20.3.4"
},
{
"status": "affected",
"version": "20.3.4.1"
},
{
"status": "affected",
"version": "20.3.4.2"
},
{
"status": "affected",
"version": "20.3.5"
},
{
"status": "affected",
"version": "20.3.6"
},
{
"status": "affected",
"version": "20.3.7"
},
{
"status": "affected",
"version": "20.3.7.1"
},
{
"status": "affected",
"version": "20.3.4.3"
},
{
"status": "affected",
"version": "20.3.5.1"
},
{
"status": "affected",
"version": "20.3.7.2"
},
{
"status": "affected",
"version": "20.3.8"
},
{
"status": "affected",
"version": "20.4.1"
},
{
"status": "affected",
"version": "20.4.1.1"
},
{
"status": "affected",
"version": "20.4.1.2"
},
{
"status": "affected",
"version": "20.4.2"
},
{
"status": "affected",
"version": "20.4.2.2"
},
{
"status": "affected",
"version": "20.4.2.1"
},
{
"status": "affected",
"version": "20.4.2.3"
},
{
"status": "affected",
"version": "20.5.1"
},
{
"status": "affected",
"version": "20.5.1.2"
},
{
"status": "affected",
"version": "20.5.1.1"
},
{
"status": "affected",
"version": "20.6.1"
},
{
"status": "affected",
"version": "20.6.1.1"
},
{
"status": "affected",
"version": "20.6.2.1"
},
{
"status": "affected",
"version": "20.6.2.2"
},
{
"status": "affected",
"version": "20.6.2"
},
{
"status": "affected",
"version": "20.6.3"
},
{
"status": "affected",
"version": "20.6.3.1"
},
{
"status": "affected",
"version": "20.6.4"
},
{
"status": "affected",
"version": "20.6.5"
},
{
"status": "affected",
"version": "20.6.5.1"
},
{
"status": "affected",
"version": "20.6.5.3"
},
{
"status": "affected",
"version": "20.6.1.2"
},
{
"status": "affected",
"version": "20.6.3.2"
},
{
"status": "affected",
"version": "20.6.4.1"
},
{
"status": "affected",
"version": "20.6.5.2"
},
{
"status": "affected",
"version": "20.6.5.4"
},
{
"status": "affected",
"version": "20.6.3.3"
},
{
"status": "affected",
"version": "20.6.4.2"
},
{
"status": "affected",
"version": "20.6.3.0.45"
},
{
"status": "affected",
"version": "20.6.3.0.46"
},
{
"status": "affected",
"version": "20.6.3.0.47"
},
{
"status": "affected",
"version": "20.6.3.4"
},
{
"status": "affected",
"version": "20.6.4.0.21"
},
{
"status": "affected",
"version": "20.6.5.1.10"
},
{
"status": "affected",
"version": "20.6.5.1.11"
},
{
"status": "affected",
"version": "20.6.5.1.7"
},
{
"status": "affected",
"version": "20.6.5.1.9"
},
{
"status": "affected",
"version": "20.6.5.2.4"
},
{
"status": "affected",
"version": "20.6.5.5"
},
{
"status": "affected",
"version": "20.6.5.2.8"
},
{
"status": "affected",
"version": "20.6.5.1.13"
},
{
"status": "affected",
"version": "20.6.6"
},
{
"status": "affected",
"version": "20.6.7"
},
{
"status": "affected",
"version": "20.6.8"
},
{
"status": "affected",
"version": "20.7.1"
},
{
"status": "affected",
"version": "20.7.1.1"
},
{
"status": "affected",
"version": "20.7.2"
},
{
"status": "affected",
"version": "20.8.1"
},
{
"status": "affected",
"version": "20.9.1"
},
{
"status": "affected",
"version": "20.9.2"
},
{
"status": "affected",
"version": "20.9.2.1"
},
{
"status": "affected",
"version": "20.9.3"
},
{
"status": "affected",
"version": "20.9.3.1"
},
{
"status": "affected",
"version": "20.9.2.3"
},
{
"status": "affected",
"version": "20.9.3.0.12"
},
{
"status": "affected",
"version": "20.9.3.0.16"
},
{
"status": "affected",
"version": "20.9.3.0.17"
},
{
"status": "affected",
"version": "20.9.3.0.18"
},
{
"status": "affected",
"version": "20.9.3.0.20"
},
{
"status": "affected",
"version": "20.9.3.0.21"
},
{
"status": "affected",
"version": "20.9.3.2"
},
{
"status": "affected",
"version": "20.9.3.2_LI_Images"
},
{
"status": "affected",
"version": "20.9.4"
},
{
"status": "affected",
"version": "20.9.4_LI_Images"
},
{
"status": "affected",
"version": "20.9.3.0.23"
},
{
"status": "affected",
"version": "20.9.4.1"
},
{
"status": "affected",
"version": "20.9.5"
},
{
"status": "affected",
"version": "20.9.5.1"
},
{
"status": "affected",
"version": "20.9.5.2"
},
{
"status": "affected",
"version": "20.9.6"
},
{
"status": "affected",
"version": "20.9.5.3"
},
{
"status": "affected",
"version": "20.9.7"
},
{
"status": "affected",
"version": "20.9.7.1"
},
{
"status": "affected",
"version": "20.9.8"
},
{
"status": "affected",
"version": "20.10.1"
},
{
"status": "affected",
"version": "20.10.1.1"
},
{
"status": "affected",
"version": "20.10.1.2"
},
{
"status": "affected",
"version": "20.11.1"
},
{
"status": "affected",
"version": "20.11.1.1"
},
{
"status": "affected",
"version": "20.11.1.2"
},
{
"status": "affected",
"version": "20.12.1"
},
{
"status": "affected",
"version": "20.12.1_LI_Images"
},
{
"status": "affected",
"version": "20.12.2"
},
{
"status": "affected",
"version": "20.12.3"
},
{
"status": "affected",
"version": "20.12.3.1"
},
{
"status": "affected",
"version": "20.12.4"
},
{
"status": "affected",
"version": "20.12.4.1"
},
{
"status": "affected",
"version": "20.12.5"
},
{
"status": "affected",
"version": "20.12.5.1"
},
{
"status": "affected",
"version": "20.12.5.2"
},
{
"status": "affected",
"version": "20.12.6"
},
{
"status": "affected",
"version": "20.13.1"
},
{
"status": "affected",
"version": "20.14.1"
},
{
"status": "affected",
"version": "20.15.1"
},
{
"status": "affected",
"version": "20.15.2"
},
{
"status": "affected",
"version": "20.15.3"
},
{
"status": "affected",
"version": "20.15.3.1"
},
{
"status": "affected",
"version": "20.15.4"
},
{
"status": "affected",
"version": "20.15.4.1"
},
{
"status": "affected",
"version": "20.16.1"
},
{
"status": "affected",
"version": "20.18.1"
},
{
"status": "affected",
"version": "20.18.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in Cisco Catalyst SD-WAN Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system.\r\n\r This vulnerability is due to insufficient file system restrictions. An authenticated attacker with netadmin privileges could exploit this vulnerability by accessing the vshell of an affected system. A successful exploit could allow the attacker to read sensitive information on the underlying operating system."
}
],
"exploits": [
{
"lang": "en",
"value": "In April 2026, the Cisco PSIRT became aware of active exploitation of the vulnerability that is described in CVE-2026-20133. Cisco strongly recommends that customers upgrade to a fixed software release to remediate these vulnerabilities."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-200",
"description": "Exposure of Sensitive Information to an Unauthorized Actor",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-22T15:31:56.704Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-sdwan-authbp-qwCX8D4v",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v"
}
],
"source": {
"advisory": "cisco-sa-sdwan-authbp-qwCX8D4v",
"defects": [
"CSCws33583"
],
"discovery": "INTERNAL"
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20133",
"datePublished": "2026-02-25T16:13:56.017Z",
"dateReserved": "2025-10-08T11:59:15.380Z",
"dateUpdated": "2026-04-22T15:31:56.704Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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