CVE-2025-20376 MEDIUM

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

Vendor Cisco
Product Cisco Unified Contact Center Express
Weakness CWE-434 · Unrestricted file upload
Published November 5, 2025
Last update February 26, 2026

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

November 5, 2025 CVE published
February 26, 2026 Record updated