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CVE-2025-20354

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CVE-2025-20354

Published: Nov 5, 2025

Modified: Feb 26, 2026

PUBLISHED

CVSS v3.1

9.8

CRITICAL

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.

VendorProductVersions

Cisco

Cisco Unified Contact Center Express

affected
10.5(1)SU1
affected
10.6(1)
affected
11.6(1)
affected
10.6(1)SU1
affected
10.6(1)SU3

+52 more versions

Weaknesses (CWE)

CWE-434

CVSS v3.1 Details

CVSS v3.1 Vector

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

References

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