CVE-2023-29381: Zimbra Collaboration

Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days.

An issue in Zimbra Collaboration (ZCS) v.8.8.15 and v.9.0 allows a remote attacker to escalate privileges and obtain sensitive information via the password and 2FA parameters.

Affected products

• Zimbra Collaboration: version 8.8.15 only; version 9.0.0 only

Published 2023-07-06. Last modified 2026-06-17.