CVE-2025-20276 - CVE House
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Status published Low CVE-2025-20276

Cisco Unified Contact Center Express Remote Code Execution Vulnerability

Vulnerability Description

A vulnerability in the web-based management interface of Cisco Unified CCX could allow an authenticated, remote attacker to execute arbitrary code on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials.  This vulnerability is due to insecure deserialization of Java objects by the affected software. An attacker could exploit this vulnerability by sending a crafted Java object to an affected device. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system of an affected device as a low-privilege user. A successful exploit could also allow the attacker to undertake further actions to elevate their privileges to root.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Affected Software

Cisco Unified Contact Center Express
Vulnerable Versions:
10.6(1), 10.5(1)SU1, 10.6(1)SU3, 12.0(1), 10.0(1)SU1, 10.6(1)SU1, 11.0(1)SU1, 11.5(1)SU1, 10.5(1), 11.6(1), 11.6(2), 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, 10.0(1)SU1ES04, 11.5(1)SU1ES03, 11.6(1)ES02, 11.5(1)ES01, 9.0(2)SU3ES04, 10.6(1)SU2, 10.6(1)SU2ES04, 11.6(1)ES01, 10.6(1)SU3ES02, 11.5(1)SU1ES02, 11.5(1)SU1ES01, 8.5(1), 11.0(1)SU1ES02, 12.5(1)_SU03_ES03, 12.5(1)_SU03_ES04, 12.5(1)_SU03_ES05, 12.5(1)_SU03_ES06

Timeline

Official Publish: June 4th, 2025
Last Modified: February 26th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

Weaknesses (CWE)