CVE-2025-20279 Cisco Unifed Contact Center Express Stored Cross-Site Scripting Vulnerability

Medium 4.8 Published 4 Jun 2025 Updated 4 Jun 2025

An authenticated attacker with admin credentials can inject malicious scripts into the Cisco Unified CCX web interface, potentially compromising other users.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2025-20279?

CVE-2025-20279 is a medium-severity cross-site scripting vulnerability in Cisco Unified Contact Center Express, published on 4 Jun 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-79

Which versions are affected by CVE-2025-20279?

It affects 1 product.

Products include Cisco Unified Contact Center Express.

How do I fix CVE-2025-20279?

No fix has been published for CVE-2025-20279 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-20279 being exploited?

There is no known exploitation of CVE-2025-20279 in the wild and no public exploit code.

Sources

Also known as GHSA-w882-p9f5-q733.