EUVD-2026-56594
GHSA-52xj-xx8j-p5vw
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only UAF requiring precise heap timing (AC:H); low-privilege local account needed (PR:L); full system compromise possible post-exploitation (C:H/I:H/A:H).
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
Local privilege escalation in Windows Autopilot on Windows 11 (versions 24H2 and 25H2) allows a low-privileged authenticated local attacker to achieve full system compromise through a use-after-free memory corruption flaw (CWE-416). The CVSS vector (AV:L/AC:H/PR:L) confirms local access with elevated complexity - consistent with a race condition or specific heap state requirement inherent to UAF exploitation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authorized user with low-privilege local access to the affected Windows 11 system (PR:L, AV:L confirmed by CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 7.0 with vector AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H reflects a genuine but access-constrained risk: exploitation requires existing low-privilege local access and high attack complexity, substantially limiting the attack surface compared to network-exploitable vulnerabilities. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the vendor-released patch from Microsoft: update Windows 11 24H2 systems to build 10.0.26100.9168 or later, and Windows 11 25H2 systems to build 10.0.26200.9168 or later, via Windows Update or Microsoft Update Catalog as detailed in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65783. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify and inventory Windows 11 systems running affected builds (24H2 version 10.0.26100.x and 25H2 version 10.0.26200.x). …
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
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External POC / Exploit Code
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