CVE-2025-20361: Cisco Unified Communications Manager

Medium severity, CVSS 4.8. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability 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 this vulnerability, the attacker must have valid administrative credentials.

Affected products

• Cisco Cisco Unified Communications Manager: version 12.5(1)SU2 only; version 12.5(1)SU1 only; version 12.5(1) only; version 12.5(1)SU3 only; version 12.5(1)SU4 only; version 14 only; …

Published 2025-10-01. Last modified 2026-06-17.