CVE-2025-20279: Cisco Unified Contact Center Express

Medium severity, CVSS 4.8. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco Unified CCX could allow an authenticated, remote attacker to conduct a stored XSS attack on an affected system. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper sanitization of user input to the web-based management interface. An attacker could exploit this vulnerability by submitting a malicious script through the interface. A successful exploit could allow the attacker to conduct a stored XSS attack on the affected system.

Affected products

• Cisco Unified Contact Center Express: version 8.5(1) only; version 9.0(2)su3es04 only; version 10.0(1)su1 only; version 10.0(1)su1es04 only; version 10.5(1) only; version 10.5(1)su1 only; …

Published 2025-06-04. Last modified 2026-06-17.