CVE-2026-20109: Cisco Packaged Contact Center Enterprise

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

Multiple vulnerabilities in the web-based management interface of Cisco Packaged Contact Center Enterprise (Packaged CCE) and Cisco Unified Contact Center Enterprise (Unified CCE) could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device.  These vulnerabilities exist because the web-based management interface does not properly validate user-supplied input. An attacker could exploit these vulnerabilities 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 these vulnerabilities, the attacker must have valid administrative credentials.

Affected products

• Cisco Cisco Packaged Contact Center Enterprise: version 12.5(1) only; version 11.0(1) only; version 12.0(1) only; version 11.0(2) only; version 11.5(1) only; version 10.5(1) only; …
• Cisco Cisco Unified Contact Center Enterprise: version 12.6(1)ES3 only; version 12.6(1)ES1 only; version 12.6(1) only; version 12.6(1)ES2 only; version 12.6(1)SecurityPatch only; version 12.5(1)ES1 only; …

Published 2026-01-21. Last modified 2026-06-17.