SB2025110526 - Multiple vulnerabilities in Cisco Unified Contact Center Express

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Main Vulnerability Database SB2025110526

SB2025110526 - Multiple vulnerabilities in Cisco Unified Contact Center Express

Published: November 5, 2025

Security Bulletin ID SB2025110526
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Arbitrary file upload (CVE-ID: CVE-2025-20354)

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload in the Java Remote Method Invocation (RMI) process. A remote non-authenticated attacker can upload a malicious file and execute it on the server.


2) Missing Authentication for Critical Function (CVE-ID: CVE-2025-20358)

CWE-ID: CWE-306 - Missing Authentication for Critical Function

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Red


The vulnerability allows a remote attacker to bypass authentication. 

The vulnerability exists due to missing authentication in the Contact Center Express (CCX) Editor application. A remote non-authenticated attacker can bypass authentication and obtain administrative permissions pertaining to script creation and execution.


Remediation

Install update from vendor's website.

References