CVE-2021-1500: Cisco Collaboration Meeting Rooms

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

A vulnerability in the web-based management interface of Cisco Webex Video Mesh could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. This vulnerability is due to improper input validation of the URL parameters in an HTTP request. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to redirect a user to a malicious website. Attackers may use this type of vulnerability, known as an open redirect attack, as part of a phishing attack to persuade users to unknowingly visit malicious sites.

Affected products

• Cisco Collaboration Meeting Rooms: version 2.0 only
• Cisco Webex Video Mesh: before 2021.10.18.2439m (fixed in 2021.10.18.2439m)

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