EUVD-2026-56663
GHSA-p32h-7xpq-58gg
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with a low-privilege account required; high complexity reflects race condition timing; no scope change as impact stays within the vulnerable kernel.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in the Windows Kernel affects Windows 11 (23H2 through 26H1) and Windows Server 2025, exploitable by any authenticated local user to gain SYSTEM-level access. The root mechanism is a use-after-free condition triggered through a race condition in kernel memory management, classified under CWE-362. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid local user account with at least standard (low-privilege) permissions - the CVSS vector PR:L confirms this. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.0 score reflects the local attack vector (AV:L) and high attack complexity (AC:H) required to reliably win a kernel race condition timing window, both of which meaningfully constrain opportunistic exploitation. … 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 | Microsoft has released patches for all affected Windows versions; organizations should apply the relevant cumulative update immediately. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and inventory all Windows 11 (23H2-26H1) and Windows Server 2025 systems in your environment, prioritizing production servers. …
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Same weakness CWE-362 – Race Condition
View allSame technique Denial Of Service
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External POC / Exploit Code
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