CVE-2021-1407: Cisco Unified Communications Manager

Medium severity, CVSS 6.1. EPSS: 0.8% chance of exploitation in the next 30 days.

Multiple vulnerabilities in the web-based management interface of Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), and Cisco Unity Connection could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against an interface user. These vulnerabilities exist because the web-based management interface does not properly validate user-supplied input. An attacker could exploit these vulnerabilities by persuading an interface user to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive browser-based information.

Affected products

• Cisco Unified Communications Manager: before 14 (fixed in 14)

Published 2021-04-08. Last modified 2026-06-17.