9.8

CVE-2025-20354: cisco cisco unified contact center express

CVSS: 9.8v3.1CriticalAnalyzed
Published 05-11-2025Last modified 26-02-2026
Open JSON

Vulnerability summary

CVE-2025-20354 is a critical (CVSS 9.8) vulnerability in cisco cisco unified contact center express. EPSS estimates a 0.87% chance of exploitation in the next 30 days, higher than 58% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.87%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 05-11-2025
    PublishedVulnerability first disclosed.
  2. 26-02-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.87%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

0.00 pp

From 0.87% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.87%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco2 products
  • cisco unified contact center express10.5(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
  • unified_contact_center_express< 12.5\(1\)_su03_es07 | 15.0

1 vendor · 2 products

References

1 links