Auth RCE via file upload in Cisco Unified CCX Web UI
CVE-2025-20376 Published on November 5, 2025
Cisco Unified Contact Center Express Remote Code Execution Vulnerability
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.
Vulnerability Analysis
CVE-2025-20376 is exploitable with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is an Unrestricted File Upload Vulnerability?
The software allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment.
CVE-2025-20376 has been classified to as an Unrestricted File Upload vulnerability or weakness.
Products Associated with CVE-2025-20376
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Affected Versions
Cisco Unified Contact Center Express:- Version 10.5(1)SU1 is affected.
- Version 10.6(1) is affected.
- Version 11.6(1) is affected.
- Version 10.6(1)SU1 is affected.
- Version 10.6(1)SU3 is affected.
- Version 11.6(2) is affected.
- Version 12.0(1) is affected.
- Version 11.0(1)SU1 is affected.
- Version 11.5(1)SU1 is affected.
- Version 10.5(1) is affected.
- Version 12.5(1) is affected.
- Version 12.5(1)SU1 is affected.
- Version 12.5(1)SU2 is affected.
- Version 12.5(1)SU3 is affected.
- Version 12.5(1)_SU03_ES01 is affected.
- Version 12.5(1)_SU03_ES02 is affected.
- Version 12.5(1)_SU02_ES03 is affected.
- Version 12.5(1)_SU02_ES04 is affected.
- Version 12.5(1)_SU02_ES02 is affected.
- Version 12.5(1)_SU01_ES02 is affected.
- Version 12.5(1)_SU01_ES03 is affected.
- Version 12.5(1)_SU02_ES01 is affected.
- Version 11.6(2)ES07 is affected.
- Version 11.6(2)ES08 is affected.
- Version 12.5(1)_SU01_ES01 is affected.
- Version 12.0(1)ES04 is affected.
- Version 12.5(1)ES02 is affected.
- Version 12.5(1)ES03 is affected.
- Version 11.6(2)ES06 is affected.
- Version 12.5(1)ES01 is affected.
- Version 12.0(1)ES03 is affected.
- Version 12.0(1)ES01 is affected.
- Version 11.6(2)ES05 is affected.
- Version 12.0(1)ES02 is affected.
- Version 11.6(2)ES04 is affected.
- Version 11.6(2)ES03 is affected.
- Version 11.6(2)ES02 is affected.
- Version 11.6(2)ES01 is affected.
- Version 10.6(1)SU3ES03 is affected.
- Version 11.0(1)SU1ES03 is affected.
- Version 10.6(1)SU3ES01 is affected.
- Version 10.5(1)SU1ES10 is affected.
- Version 11.5(1)SU1ES03 is affected.
- Version 11.6(1)ES02 is affected.
- Version 11.5(1)ES01 is affected.
- Version 10.6(1)SU2 is affected.
- Version 10.6(1)SU2ES04 is affected.
- Version 11.6(1)ES01 is affected.
- Version 10.6(1)SU3ES02 is affected.
- Version 11.5(1)SU1ES02 is affected.
- Version 11.5(1)SU1ES01 is affected.
- Version 11.0(1)SU1ES02 is affected.
- Version 12.5(1)_SU03_ES03 is affected.
- Version 12.5(1)_SU03_ES04 is affected.
- Version 12.5(1)_SU03_ES05 is affected.
- Version UCCX 15.0.1 is affected.
- Version 12.5(1)_SU03_ES06 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.