CVE-2021-34993

CRITICAL EXPLOITED

Commvault CommCell - Unauthenticated Authentication Bypass in CVSearchService

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2021-34993 has been observed exploited in the wild (reported by VulnCheck KEV).

Description

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.

References (1)

Core 1
Core References
Third Party Advisory, VDB Entry x_refsource_misc
https://www.zerodayinitiative.com/advisories/ZDI-21-1328/

Scores

CVSS v3 9.8
EPSS 0.0542
EPSS Percentile 91.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

VulnCheck KEV 2024-01-22
CWE
CWE-287
Status published
Products (1)
commvault/commcell 11.22.22
Published Jan 13, 2022
Tracked Since Feb 18, 2026