CVE-2025-20376 Cisco Unified Contact Center Express Remote Code Execution Vulnerability

Medium 6.5 Published 5 Nov 2025 Updated 26 Feb 2026

An authenticated attacker with admin credentials can upload malicious files to the web UI to execute arbitrary commands and gain root privileges.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-20376?

CVE-2025-20376 is a medium-severity vulnerability in Cisco Unified Contact Center Express, published on 5 Nov 2025. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A vulnerability in the web UI of Cisco Unified CCX could allow an authenticated, remote attacker to upload and execute arbitrary files. This vulnerability is due to an insufficient input validation associated to file upload mechanisms. An attacker could exploit this vulnerability by uploading a malicious file to the web UI and executing it. A successful exploit could allow the attacker to execute arbitrary commands on the underlying system and elevate privileges to root. To exploit this vulnerability, the attacker must have valid administrative credentials.

Weakness: CWE-434

Which versions are affected by CVE-2025-20376?

It affects 1 product.

Products include Cisco Unified Contact Center Express.

How do I fix CVE-2025-20376?

No fix has been published for CVE-2025-20376 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-20376 being exploited?

There is no known exploitation of CVE-2025-20376 in the wild and no public exploit code.

Sources

Also known as GHSA-x3h8-2mvf-vv78.