CVE-2021-34701: Cisco Unified Communications Manager

Medium severity, CVSS 4.3. EPSS: 1.6% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), and Cisco Unity Connection could allow an authenticated, remote attacker to access sensitive data on an affected device. This vulnerability exists because the web-based management interface does not properly validate 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 affected system.

Affected products

• Cisco Unified Communications Manager: before 14su1 (fixed in 14su1)
• Cisco Unified Communications Manager Im And Presence Service: before 14su1 (fixed in 14su1)
• Cisco Unity Connection: before 14su1 (fixed in 14su1)

Published 2021-11-04. Last modified 2026-06-17.