Arbitrary file upload in Cisco Unified Contact Center Express
CVE-2025-20376
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 class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.000
Affected products
- Cisco Unified Contact Center Express — versions 10.5(1)SU1, 10.6(1), 11.6(1)
- Cisco Unified Contact Center Express — versions 15.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-20376?
- CVE-2025-20376 is a medium-severity vulnerability in Cisco Unified Contact Center Express, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 6.5/10. Published 2025-11-05.
- How severe is CVE-2025-20376?
- Medium severity. CVSS v3 base score is 6.5 out of 10.