CVE-2021-34993: critical vulnerability in Commvault CommCell
Published · Updated
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50Vexday Risk Score
Prioritize patching. It exploitation observed by VulnCheck.
ssvc Actcvss 9.8epss 5.8%
from disclosure to weapon
Published on NVDJan 13
VulnCheck+739d
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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Commvault · CommCellRelated CVEs — Commvault CommCell
In the same product, most dangerous first.
CVE-2021-34996HIGHCVE-2021-34996EPSS 82.3%CVE-2021-34995HIGHCVE-2021-34995EPSS 68.9%CVE-2025-57790HIGHPath Traversal VulnerabilityEPSS 43.6%CVE-2025-57791MEDIUMArgument Injection Vulnerability in CommServeEPSS 38.8%CVE-2025-57788MEDIUMUnauthorized API Access RiskEPSS 7.8%CVE-2021-34994HIGHCVE-2021-34994EPSS 6.0%