Windows Kernel Elevation of Privilege Vulnerability

MonitorCVSS 6.8CVE-2026-103578Oct 13, 2026
Microsoft
IT in OT - Windows Server and Active Directory are widely deployed in OT environments
Attack path
Attack VectorPhysical
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary

Untrusted pointer dereference in Windows Kernel allows an unauthorized attacker to elevate privileges with physical access. Affects Windows 11 Version 26H1 for both ARM64-based and x64-based systems.

What this means
What could happen
An attacker with physical access to a Windows 11 system could escalate privileges to run code with full system access, potentially compromising any control software or data on that computer.
Who's at risk
Windows administrators and OT security personnel managing engineering workstations, HMI computers, or office systems running Windows 11 Version 26H1. This primarily affects IT environments rather than direct control systems, but compromised workstations could be used to access and manipulate industrial control systems.
How it could be exploited
An attacker would need physical access to the system. They would exploit an untrusted pointer dereference in the Windows kernel to escalate from user-level to system-level privileges, allowing them to bypass administrative controls and execute arbitrary code.
Prerequisites
  • Physical access to the Windows 11 system
  • System running Windows 11 Version 26H1 (ARM64 or x64)
  • Unpatched kernel
Low complexity attackPhysical access required
Exploitability
Unlikely to be exploited — EPSS score 0.4%
Affected products (2)
2 with fix
ProductAffected VersionsFix Status
Windows 11 Version 26H1 for ARM64-based SystemsAll versionsBuild 10.0.28000.3231
Windows 11 version 26H1 for x64-based SystemsAll versionsBuild 10.0.28000.3231
Remediation & Mitigation
0/1
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HOTFIXApply the 2026-Oct Windows security update to bring Windows 11 to Build 10.0.28000.3231 or later
API: /api/v1/advisories/51b36619-b862-4e0b-8f1d-4f1c7ac39cd7

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