Improper Verification of Cryptographic Signature in Commvault - CVE-2026-77105
Published: September 8, 2026
Vulnerability identifier: #VU147410
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2026-77105
CWE-ID: CWE-347
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to improper verification of cryptographic signatures in CommServe privilege management when processing cryptographic signatures for privilege management. A remote user can exploit the signature verification issue to escalate privileges.
Affected software
Commvault
How to mitigate CVE-2026-77105
Install security update from vendor's website.
Commvault - addressed in versions 11.36.123, 11.40.72, 11.44.20, 11.46.20