Arbitrary file upload in Cisco Unified Contact Center Express
CVE-2025-20354
A vulnerability in the Java Remote Method Invocation (RMI) process of Cisco Unified CCX could allow an unauthenticated, remote attacker to upload arbitrary files and execute arbitrary commands with root permissions on an affected system. …
Vulnerability class: Unrestricted File Upload
EPSS: 0.002 (39.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Cisco Unified Contact Center Express — versions 10.5(1)SU1, 10.6(1), 11.6(1)
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-20354?
- CVE-2025-20354 is a critical-severity vulnerability in Cisco Unified Contact Center Express, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2025-11-05.
- How severe is CVE-2025-20354?
- Critical severity. CVSS v3 base score is 9.8 out of 10.