CVE-2021-34409: Zoom Meetings

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

It was discovered that the installation packages of the Zoom Client for Meetings for MacOS (Standard and for IT Admin) installation before version 5.2.0, Zoom Client Plugin for Sharing iPhone/iPad before version 5.2.0, and Zoom Rooms for Conference before version 5.1.0, copy pre- and post- installation shell scripts to a user-writable directory. In the affected products listed below, a malicious actor with local access to a user's machine could use this flaw to potentially run arbitrary system commands in a higher privileged context during the installation process.

Affected products

• Zoom Meetings: before 5.2.0 (fixed in 5.2.0)
• Zoom Rooms: before 5.1.0 (fixed in 5.1.0)
• Zoom Screen Sharing: before 5.2.0 (fixed in 5.2.0)

Published 2021-09-27. Last modified 2026-06-17.