CVE-2025-20358 CRITICAL

CVE-2025-20358: Cisco Unified Contact Center Express Editor Authentication Bypass Vulnerability

Vendor Cisco
Product Cisco Unified Contact Center Express
Weakness CWE-306 · Missing auth
Published November 5, 2025
Last update February 26, 2026

CVSS base score

9.4/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

A vulnerability in the Contact Center Express (CCX) Editor application of Cisco Unified CCX could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative permissions pertaining to script creation and execution. This vulnerability is due to improper authentication mechanisms in the communication between the CCX Editor and an affected Unified CCX server. An attacker could exploit this vulnerability by redirecting the authentication flow to a malicious server and tricking the CCX Editor into believing the authentication was successful. A successful exploit could allow the attacker to create and execute arbitrary scripts on the underlying operating system of an affected Unified CCX server, as an internal non-root user account.

Key dates

02Disclosure timeline

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