CVE-2024-20511: Cisco Unified Communications Manager

Medium severity, CVSS 6.1. EPSS: 0.3% 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 unauthenticated, 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 persuading a user of the interface to click a crafted link. 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.

Affected products

• Cisco Unified Communications Manager: version 12.0(1)su1 only; version 12.0(1)su2 only; version 12.0(1)su3 only; version 12.0(1)su4 only; version 12.0(1)su5 only; version 12.5(1) only; …

Published 2024-11-06. Last modified 2026-06-17.