🔐 CVE Alert

CVE-2025-20354

CRITICAL 9.8

Cisco Unified Contact Center Express Remote Code Execution Vulnerability

CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-434
Vendor cisco
Product cisco unified contact center express
Ecosystems
Industries
NetworkingTelecommunications
Published Nov 5, 2025
Last Updated Feb 26, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Affected Versions

Cisco / Cisco Unified Contact Center Express
10.5(1)SU1 10.6(1) 11.6(1) 10.6(1)SU1 10.6(1)SU3 11.6(2) 12.0(1) 11.0(1)SU1 11.5(1)SU1 10.5(1) 12.5(1) 12.5(1)SU1 12.5(1)SU2 12.5(1)SU3 12.5(1)_SU03_ES01 12.5(1)_SU03_ES02 12.5(1)_SU02_ES03 12.5(1)_SU02_ES04 12.5(1)_SU02_ES02 12.5(1)_SU01_ES02 12.5(1)_SU01_ES03 12.5(1)_SU02_ES01 11.6(2)ES07 11.6(2)ES08 12.5(1)_SU01_ES01 12.0(1)ES04 12.5(1)ES02 12.5(1)ES03 11.6(2)ES06 12.5(1)ES01 12.0(1)ES03 12.0(1)ES01 11.6(2)ES05 12.0(1)ES02 11.6(2)ES04 11.6(2)ES03 11.6(2)ES02 11.6(2)ES01 10.6(1)SU3ES03 11.0(1)SU1ES03 10.6(1)SU3ES01 10.5(1)SU1ES10 11.5(1)SU1ES03 11.6(1)ES02 11.5(1)ES01 10.6(1)SU2 10.6(1)SU2ES04 11.6(1)ES01 10.6(1)SU3ES02 11.5(1)SU1ES02 11.5(1)SU1ES01 11.0(1)SU1ES02 12.5(1)_SU03_ES03 12.5(1)_SU03_ES04 12.5(1)_SU03_ES05 UCCX 15.0.1 12.5(1)_SU03_ES06

References

NVD ↗ CVE.org ↗ EPSS Data ↗
sec.cloudapps.cisco.com: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cc-unauth-rce-QeN8h7mQ