CVE-2026-77105

HIGH CVSS 4.0: 8.7 EPSS 0.15%
Updated Sep 09, 2026
Commvault
Parameter Value
CVSS 8.7 (HIGH)
Affected Versions 11.36.0 — 11.46.20
Fixed In 11.36.123
Type CWE-347 (Improper Verification of Cryptographic Signature), CWE-347: Improper Verification of Cryptographic Signature
Vendor Commvault
Public PoC No

CommServe contained a cryptographic signature verification issue affecting privilege management. Software customers upgrade to resolved maintenance release. Update CommServe and Web Server.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Vulnerable Products 6

Configuration From (including) Up to (excluding)
Commvault Commvault
cpe:2.3:a:commvault:commvault:*:*:*:*:*:*:*:*
11.36.0 11.36.123
Commvault Commvault
cpe:2.3:a:commvault:commvault:*:*:*:*:*:*:*:*
11.40.0 11.40.72
Commvault Commvault
cpe:2.3:a:commvault:commvault:*:*:*:*:*:*:*:*
11.44.0 11.44.20
Commvault Commvault
cpe:2.3:a:commvault:commvault:*:*:*:*:*:*:*:*
11.46.0 11.46.20
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Microsoft Windows
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*