CVE-2025-20354

Published Nov 5, 2025

Last updated 4 months ago

CVSS critical 9.8

Overview

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.
Source: psirt@cisco.com
NVD status: Analyzed
Products: unified_contact_center_express

Risk scores

CVSS 3.1

Type: Primary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

Weaknesses

psirt@cisco.com: CWE-434

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:cisco:unified_contact_center_express:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "6EF18C21-6E70-4748-99FA-884754F44D1A",
            "versionEndExcluding": "12.5\\(1\\)_su03_es07",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:unified_contact_center_express:15.0:*:*:*:*:*:*:*",
            "matchCriteriaId": "124C88AE-ED0C-4CBC-A84D-200EDB776C8C",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.

Overview

Risk scores

CVSS 3.1

Weaknesses

Social media

Configurations

Related CVEs

References