CVE-2021-34994 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-2021-21641
- cvss
- 8.8
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 6.0%
- EPSS 6.0% chance of exploitation in 30 days, percentile 93%
- 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 DataProvider class. The issue results from the lack of proper validation of a user-supplied string before executing it as JavaScript code. An attacker can leverage this vulnerability to escape the JavaScript sandbox and execute Java code in the context of NETWORK SERVICE. Was ZDI-CAN-13755.
Exploit prediction
5.98% 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 | 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 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Affected products
- Commvault CommCell
Classification
References
-
zerodayinitiative.com
/advisories/ZDI-21-1329/
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-34994
- NVD CVE-2021-34994
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