Improper Authentication in Commvault - CVE-2026-77103
Published: September 8, 2026
Vulnerability identifier: #VU147408
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-77103
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper authentication in CommServe when attempting to access protected functionality. A remote attacker can bypass authentication to disclose sensitive information.
Affected software
Commvault
How to mitigate CVE-2026-77103
Install security update from vendor's website.
Commvault - addressed in versions 11.36.123, 11.40.72, 11.44.20, 11.46.20