Windows
CVE-2025-3928
HIGH
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
3DescriptionCVE.org
Commvault Web Server has an unspecified vulnerability that can be exploited by a remote, authenticated attacker. According to the Commvault advisory: "Webservers can be compromised through bad actors creating and executing webshells." Fixed in version 11.36.46, 11.32.89, 11.28.141, and 11.20.217 for Windows and Linux platforms. This vulnerability was added to the CISA Known Exploited Vulnerabilities (KEV) Catalog on 2025-04-28.
AnalysisAI
Commvault Web Server allows authenticated remote attackers to create and execute webshells, exploited in the wild alongside CVE-2025-34028 for comprehensive backup infrastructure compromise.
Technical ContextAI
The vulnerability allows bad actors to compromise Commvault webservers through webshell creation and execution. While requiring authentication, compromised credentials or chaining with other vulnerabilities enables exploitation.
RemediationAI
Apply Commvault security updates. Implement MFA for Commvault admin access. Monitor for web shell creation. Implement immutable backup storage.
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External POC / Exploit Code
Leaving vuln.today