CVE-2021-34993: Commvault Commcell

Critical severity, CVSS 9.8. EPSS: 5.4% chance of exploitation in the next 30 days.

This vulnerability allows remote attackers to bypass authentication on affected installations of Commvault CommCell 11.22.22. Authentication is not required to exploit this vulnerability. The specific flaw exists within the CVSearchService service. The issue results from the lack of proper validation prior to authentication. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-13706.

Affected products

• Commvault Commcell: version 11.22.22 only

Published 2022-01-13. Last modified 2026-06-17.