CVE-2017-6813: Synacor Zimbra Collaboration Suite

Critical severity, CVSS 9.8. EPSS: 2.6% chance of exploitation in the next 30 days.

A service provided by Zimbra Collaboration Suite (ZCS) before 8.7.6 fails to require needed privileges before performing a few requested operations.

Affected products

• Synacor Zimbra Collaboration Suite: up to and including 8.7.5

Published 2017-05-23. Last modified 2026-06-17.