CVE-2023-20242: Cisco Unified Communications Manager

Medium severity, CVSS 6.1. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM), Cisco Unified CM Session Management Edition (Unified CM SME), and Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P) 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 11.5(1) only; version 12.5(1) only; version 14.0 only
• Cisco Unified Communications Manager Im And Presence Service: version 11.5(1) only; version 12.5(1) only; version 14.0 only

Published 2023-08-16. Last modified 2026-06-17.