Answer in brief
CVE-2025-20354 records a Critical severity (CVSS 9.8) vulnerability in Cisco Unified Contact Center Express Remote Code Execution Vulnerability. The current sources do not mark it as known exploited. The current feed maps Cisco/Cisco Unified Contact Center Express (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Cisco/Cisco Unified Contact Center Express (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:cisco:unified_contact_center_express:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:cisco:unified_contact_center_express:15.0:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Cisco/Cisco Unified Contact Center Expressgeneric | 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 | Not reported |
Published upstream
Nov 5, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 3, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 28, 2026
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.
Quoted source text, attributed separately from HOL analysis.