CVE-2021-34993
CVSS v3
9.8
CRITICAL
EPSS Score
5.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2022-01-13
Frequently asked questions
What is CVE-2021-34993?
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.
Is CVE-2021-34993 actively exploited?
Active exploitation of CVE-2021-34993 has not been confirmed. Its EPSS score was 5.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-34993?
CVE-2021-34993 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-34993 affecting your environment?
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