Windows Kernel Elevation of Privilege Vulnerability in Microsoft Products
CVE-2026-40369

7.8HIGH

Key Information:

Vendor

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

What is CVE-2026-40369?

A vulnerability in the Windows Kernel allows an authorized attacker to exploit an untrusted pointer dereference, potentially enabling them to gain higher privileges on the affected system. This could lead to unauthorized access to sensitive data and administrative functionalities. It's critical for users to apply the necessary security patches to safeguard their systems against this threat.

Affected Version(s)

Windows 11 Version 24H2 ARM64-based Systems 10.0.26100.0 < 10.0.26100.8457

Windows 11 Version 25H2 ARM64-based Systems 10.0.26200.0 < 10.0.26200.8457

Windows 11 version 26H1 ARM64-based Systems 10.0.28000.0 < 10.0.28000.2113

References

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

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.