Advisory Details

November 22nd, 2021

Commvault CommCell CVSearchService Authentication Bypass Vulnerability

CVE ID	CVE-2021-34993
CVSS SCORE	9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Commvault
AFFECTED PRODUCTS	CommCell
VULNERABILITY DETAILS	This vulnerability allows remote attackers to bypass authentication on affected installations of Commvault CommCell. 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.
ADDITIONAL DETAILS	Commvault has issued an update to correct this vulnerability. More details can be found at: https://documentation.commvault.com/securityadvisories/CV_2021_08_1.html
DISCLOSURE TIMELINE	2021-06-30 - Vulnerability reported to vendor 2021-11-22 - Coordinated public release of advisory 2025-08-04 - Advisory Updated
CREDIT	Brandon Perry, Justin Kennedy and Steven Seeley of Source Incite

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