CVE-2021-27401: Mitel MiCollab

Medium severity, CVSS 6.1. EPSS: 0.6% chance of exploitation in the next 30 days.

The Join Meeting page of Mitel MiCollab Web Client before 9.2 FP2 could allow an attacker to access (view and modify) user data by executing arbitrary code due to insufficient input validation, aka Cross-Site Scripting (XSS).

Affected products

• Mitel MiCollab: before 9.2 (fixed in 9.2); version 9.2 only

Published 2021-08-13. Last modified 2026-06-17.