CVE-2022-20816: Cisco Unified Communications Manager Arbitrary File Deletion Vulnerability

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-08-10 · updated 2026-06-17
Weakness: CWE-22

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 delete arbitrary files from an affected system. This vulnerability exists because the affected software does not properly validate HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to the affected software. A successful exploit could allow the attacker to delete arbitrary files from the affected system.

Affected products

Cisco Unified Communications Manager: from 11.5\(1\) before 14su2 — fixed in 14su2

How to fix

Upgrade to a fixed version: Cisco Unified Communications Manager 14su2. Check the vendor advisory for mitigations.

References

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