Vulnerability · Published Nov 5, 2025 · Assigned by cisco
CVE-2025-20354Cisco Unified Contact Center Express Remote Code Execution Vulnerability
Critical 9.8
In plain English
A critical-severity unrestricted file upload in Cisco Unified Contact Center Express from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities).
Official description
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. This vulnerability is due to improper authentication mechanisms that are associated to specific Cisco Unified CCX features. An attacker could exploit this vulnerability by uploading a crafted file to an affected system through the Java RMI process. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system and elevate privileges to root.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Unified Contact Center Express | 10.5(1)SU110.6(1)11.6(1)10.6(1)SU110.6(1)SU311.6(2)12.0(1)11.0(1)SU1 |
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H