CVE-2022-20752: Cisco Unified Communications Manager

Medium severity, CVSS 5.3. EPSS: 1% chance of exploitation in the next 30 days.

A vulnerability in Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), and Cisco Unity Connection could allow an unauthenticated, remote attacker to perform a timing attack. This vulnerability is due to insufficient protection of a system password. An attacker could exploit this vulnerability by observing the time it takes the system to respond to various queries. A successful exploit could allow the attacker to determine a sensitive system password.

Affected products

• Cisco Unified Communications Manager: from 12.5\(1\), before 12.5\(1\)su6 (fixed in 12.5\(1\)su6); from 14.0, before 14su1 (fixed in 14su1)
• Cisco Unity Connection: from 12.5\(1\), before 12.5\(1\)su6 (fixed in 12.5\(1\)su6); from 14.0, before 14su1 (fixed in 14su1)

Published 2022-07-06. Last modified 2026-06-17.