Elevation of Privilege Vulnerability in Windows Win32K by Microsoft
CVE-2026-65776

7HIGH

Key Information:

Vendor

Microsoft
Status
Windows 11 Version 24h2
Windows 11 Version 25h2
Windows 11 Version 26h1
Windows Server 2025
Vendor
CVE Published:
11 August 2026

What is CVE-2026-65776?

An elevation of privilege vulnerability exists in the Windows Win32K component, allowing an authorized attacker to exploit the use after free condition to gain elevated privileges on the affected system. This could potentially enable the attacker to install programs, view or modify data, or create new user accounts with full user rights. Regular updates and patching are essential to mitigate this risk.

Affected Version(s)

Windows 11 Version 24H2 ARM64-based Systems 10.0.26100.0 < 10.0.26100.9168

Windows 11 Version 25H2 ARM64-based Systems 10.0.26200.0 < 10.0.26200.9168

Windows 11 version 26H1 ARM64-based Systems 10.0.28000.0 < 10.0.28000.2704

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.