Input validation error in Windows and Windows Server - CVE-2026-45642
Published: June 10, 2026
Vulnerability identifier: #VU134264
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-45642
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a local user to compromise the target system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Azure Attestation service and Device Health Attestation Service. An administrator with physical access can perform spoofing attack on the system.
How to mitigate CVE-2026-45642
Install updates from vendor's website.