CVE-2025-20326: Cisco Unified Communications Manager

High severity, CVSS 8.8. 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) Software and Cisco Unified CM Session Management Edition (SME) Software could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack on an affected device. This vulnerability is due to insufficient CSRF protections for the web-based management interface on an affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a malicious link. A successful exploit could allow the attacker to perform arbitrary actions with the privilege level of the affected user.

Affected products

• Cisco Unified Communications Manager: from 15.0, before 15su3 (fixed in 15su3); version 12.5 only; version 14.0 only

Published 2025-09-03. Last modified 2026-06-17.