CVE-2021-34415: Zoom Meeting Connector

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

The Zone Controller service in the Zoom On-Premise Meeting Connector Controller before version 4.6.358.20210205 does not verify the cnt field sent in incoming network packets, which leads to exhaustion of resources and system crash.

Affected products

• Zoom Meeting Connector: before 4.6.358.20210205 (fixed in 4.6.358.20210205)

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