CVE-2021-34993 json
This vulnerability allows remote attackers to bypass authentication on affected installations of Commvault CommCell 11.22.22.
published 2022-01-13 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21640
- cvss
- 9.8
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 5.8%
- EPSS 5.8% chance of exploitation in 30 days, percentile 93%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
5.83% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Commvault CommCell
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
zerodayinitiative.com
/advisories/ZDI-21-1328/
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-34993
- NVD CVE-2021-34993
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