CVE-2021-34996 in the critical feed json
This vulnerability allows remote attackers to execute arbitrary code 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-2021-21643
- cvss
- 8.8
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 82.3%
- EPSS 82.3% chance of exploitation in 30 days, percentile 99.6%
- public exploits
- 0
- none known
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Commvault CommCell 11.22.22. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the Demo_ExecuteProcessOnGroup workflow. By creating a workflow, an attacker can specify an arbitrary command to be executed. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-13889.
Exploit prediction
82.26% chance of exploitation in the next 30 days, higher than 99.6% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
Affected products
- Commvault CommCell
Classification
- Weakness
-
- CWE-749 Exposed Dangerous Method or Function
References
-
zerodayinitiative.com
/advisories/ZDI-21-1331/
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-34996
- NVD CVE-2021-34996
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