CVE-2022-20862: Cisco Unified Communications Manager Arbitrary File Read Vulnerability

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-07-06 · updated 2026-06-17
Weakness: CWE-23

Description

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an authenticated, remote attacker to read arbitrary files on the underlying operating system of an affected device. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request that contains directory traversal character sequences to an affected system. A successful exploit could allow the attacker to access sensitive files on the operating system.

Affected products

Cisco Unified Communications Manager: before 12.5\(1\)su6; from 14.0 before 14su2 — fixed in 12.5\(1\)su6, 14su2

How to fix

Upgrade to a fixed version: Cisco Unified Communications Manager 12.5\(1\)su6, 14su2. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2022-20862 or the next vulnerability affects your stack