Improper Check for Certificate Revocation in Azure Virtual Machines - CVE-2026-109462
Published: November 10, 2026
Vulnerability identifier: #VU164733
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-109462
CWE-ID: CWE-299
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to bypass Secure Boot.
The vulnerability exists due to improper checking of certificate revocation in Azure Firmware when validating certificates for Secure Boot. A local privileged user can exploit insufficient certificate revocation checks to bypass Secure Boot.
Affected software
Azure Virtual Machines
How to mitigate CVE-2026-109462
Install security update from vendor's website.
Azure Virtual Machines - update to 2610