Vulnerability Intelligence Report
CVE-2021-34995
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 DownloadCenterUploadHandler class. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this vulnerability to execute code in the context of NETWORK SERVICE. Was ZDI-CAN-13756.
No Active Exploit Signals
CVSS Base Score
8.8
HIGH
Exploitability:2.9
Impact Score:5.9
EPSS Probability:68.86%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-434 ↗CWE-434: Unrestricted Upload of File with Dangerous Type
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Commvault | CommCell | 11.22.22 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
68.864%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Zero Day Initiative · Bug Bounty Provider · Japan |
| Reserved | 2021-06-17T00:00:00 |
| Published | 2022-01-13T21:44:48 |
| Last Updated | 2024-08-04T00:26:55 |
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