Multiple vulnerabilities in Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to conduct SQL injections, modify data, or execute arbitrary commands on the underlying operating system on an affected device. For more information about these vulnerabilities, see the Details ["#details"] section of this advisory. Note: For CVE-2026-20282 and CVE-2026-20283, Cisco has assigned a Security Impact Rating (SIR) of High rather than Medium as the scores indicate. The reason is that it is easy to get to root from the achieved privilege level. Cisco has released software updates that address these vulnerabilities. There are workarounds that address one of 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"].

A vulnerability in the SXP REST API of Cisco ISE could allow an authenticated, remote attacker to conduct SQL injection attacks. This vulnerability is due to insufficient validation of user-supplied input in REST API calls. An attacker could exploit this vulnerability by sending crafted input to an affected device. A successful exploit could allow the attacker to view or modify data on the underlying database for the affected device. 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. To exploit this vulnerability, the attacker must have valid administrative credentials, have the SXP service enabled, and have at least one SXP connection configured.

A vulnerability in the SXP REST API of Cisco ISE could allow an authenticated, remote attacker to conduct SQL injection attacks.

This vulnerability is due to insufficient validation of user-supplied input in REST API calls. An attacker could exploit this vulnerability by sending crafted input to an affected device. A successful exploit could allow the attacker to view or modify data on the underlying database for the affected device. 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. To exploit this vulnerability, the attacker must have valid administrative credentials, have the SXP service enabled, and have at least one SXP connection configured.

Ein Angreifer kann mehrere Schwachstellen in Cisco Identity Services Engine (ISE) und ISE-PIC ausnutzen, um beliebigen Code auszuführen – sogar mit Root-Rechten –, Sicherheitsmaßnahmen zu umgehen, Berechtigungen zu erweitern, SQL-Injection-Angriffe durchzuführen, Sitzungen zu übernehmen, sensible Informationen oder Anmeldedaten offenzulegen, Daten zu manipulieren, einen Denial-of-Service-Zustand auszulösen und Cross-Site-Scripting-Angriffe durchzuführen.