EUVD-2026-56735
GHSA-h6ww-4f2m-hhj3
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack vector and race condition complexity (AC:H) confirmed by description; PR:L required as attacker needs an authenticated local session; full C/I/A impact consistent with privilege escalation to SYSTEM.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Use after free in Windows Autopilot allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation via use-after-free in Windows Autopilot on Windows 11 allows a locally authenticated attacker with standard user privileges to gain SYSTEM-level or elevated access. The vulnerability stems from improper memory management in the Autopilot provisioning component, where a freed memory region can be referenced again under a race condition (AC:H). Affected builds span both Windows 11 24H2 and 25H2 prior to the 9168 patch revision; no public exploit or CISA KEV listing has been identified at time of analysis.
Technical ContextAI
CWE-416 (Use After Free) describes a condition where a program continues to use a pointer to memory that has already been freed, allowing an attacker to corrupt heap state or hijack control flow. In the context of Windows Autopilot - Microsoft's cloud-based device provisioning framework deeply integrated with Windows 11 - this class of flaw typically arises in privileged system services or drivers that manage device enrollment state. The CVSS vector AV:L/AC:H confirms local access and high complexity, consistent with a race condition or timing-dependent memory corruption. Affected CPE-equivalent products per EUVD data are Windows 11 Version 24H2 (build 10.0.26100.x before 10.0.26100.9168) and Windows 11 Version 25H2 (build 10.0.26200.x before 10.0.26200.9168).
RemediationAI
The primary remediation is to apply the Microsoft-released patch bringing Windows 11 24H2 to build 10.0.26100.9168 or later, and Windows 11 25H2 to build 10.0.26200.9168 or later, via Windows Update or WSUS. The vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65782 contains the authoritative patch details. As a compensating control prior to patching, restricting local interactive logon rights to trusted accounts only (via Group Policy: 'Allow log on locally') limits the attacker population to users already permitted local access, reducing but not eliminating risk. Restricting access to Autopilot provisioning workflows for non-provisioning user accounts is also advisable. These workarounds do not eliminate the vulnerability and patching remains the definitive fix.
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Same weakness CWE-416 – Use After Free
View allSame technique Denial Of Service
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External POC / Exploit Code
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