Severity by source
AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in the Windows Hyper-V virtualization stack lets an attacker running code on an affected host trigger a use-after-free to gain higher privileges. The flaw affects Windows 11 (24H2, 25H2, 26H1) and Windows Server 2022/2025, was reported by Microsoft, and has a vendor patch available. …
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Recommended ActionAI
Within 24 hours, identify and document all systems running Windows 11 (24H2, 25H2, 26H1) or Windows Server 2022/2025 with Hyper-V enabled, and assess which support critical or multi-tenant workloads. …
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
View allShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-43755
GHSA-86jj-hqjw-mj6h