Authentication bypass using an alternate path or channel in Commvault - CVE-2026-77089
Published: September 8, 2026
Vulnerability identifier: #VU147400
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-77089
CWE-ID: CWE-288
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise confidentiality, integrity, and availability.
The vulnerability exists due to an authentication bypass in the Command Center API when handling API requests. A remote attacker can bypass authentication to compromise confidentiality, integrity, and availability.
Affected software
Commvault
How to mitigate CVE-2026-77089
Install security update from vendor's website.
Commvault - addressed in versions 11.36.123, 11.40.72, 11.44.20, 11.46.20