CVE-2025-20354

CRITICAL
INFO Priority: 0.09 BB Relevance: 80/100
Published: 2025-11-05 Modified: 2026-11-03 First seen: 2026-11-03 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

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 Software (57)

VendorProductVersion
Cisco Cisco Unified Contact Center Express 10.5(1)SU1
Cisco Cisco Unified Contact Center Express 10.6(1)
Cisco Cisco Unified Contact Center Express 11.6(1)
Cisco Cisco Unified Contact Center Express 10.6(1)SU1
Cisco Cisco Unified Contact Center Express 10.6(1)SU3
Cisco Cisco Unified Contact Center Express 11.6(2)
Cisco Cisco Unified Contact Center Express 12.0(1)
Cisco Cisco Unified Contact Center Express 11.0(1)SU1
Cisco Cisco Unified Contact Center Express 11.5(1)SU1
Cisco Cisco Unified Contact Center Express 10.5(1)
Cisco Cisco Unified Contact Center Express 12.5(1)
Cisco Cisco Unified Contact Center Express 12.5(1)SU1
Cisco Cisco Unified Contact Center Express 12.5(1)SU2
Cisco Cisco Unified Contact Center Express 12.5(1)SU3
Cisco Cisco Unified Contact Center Express 12.5(1)_SU03_ES01
Cisco Cisco Unified Contact Center Express 12.5(1)_SU03_ES02
Cisco Cisco Unified Contact Center Express 12.5(1)_SU02_ES03
Cisco Cisco Unified Contact Center Express 12.5(1)_SU02_ES04
Cisco Cisco Unified Contact Center Express 12.5(1)_SU02_ES02
Cisco Cisco Unified Contact Center Express 12.5(1)_SU01_ES02
Cisco Cisco Unified Contact Center Express 12.5(1)_SU01_ES03
Cisco Cisco Unified Contact Center Express 12.5(1)_SU02_ES01
Cisco Cisco Unified Contact Center Express 11.6(2)ES07
Cisco Cisco Unified Contact Center Express 11.6(2)ES08
Cisco Cisco Unified Contact Center Express 12.5(1)_SU01_ES01
Cisco Cisco Unified Contact Center Express 12.0(1)ES04
Cisco Cisco Unified Contact Center Express 12.5(1)ES02
Cisco Cisco Unified Contact Center Express 12.5(1)ES03
Cisco Cisco Unified Contact Center Express 11.6(2)ES06
Cisco Cisco Unified Contact Center Express 12.5(1)ES01
Showing 30 of 57 entries

Bug Bounty Relevance

80 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.87%
Raw Score 0.008690
Percentile 59.0%
Date 2026-11-07

EPSS Trend

2026-11-07
0.00869
2026-11-06
0.00869
2026-11-05
0.00869
2026-11-04
0.00869
2026-11-03
0.00869

Intelligence Sources

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