🛡️ CVE-2025-20354
🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-434 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-434
Public Exploit ✅ No
Source NVD
Published 2025-11-05
Updated 2026-06-02
Modified 2025-11-07
Fix URL N/A

Affected Packages

Software From version Fixed in
unified-contact-center-express — —

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