CVE-2025-20289: Cisco Identity Services Engine

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Multiple vulnerabilities in the web-based management interface of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to conduct a reflected XSS attack against a user of the interface. These vulnerabilities are due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit these vulnerabilities by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit these vulnerabilities, the attacker must have at least a low-privileged account on the affected device.

Affected products

• Cisco Identity Services Engine: up to and including 3.1.0; version 3.2.0 only; version 3.3.0 only; version 3.4.0 only

Published 2025-11-05. Last modified 2026-06-17.