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Microsoft EUVD-2026-29663

| CVE-2026-40402 CRITICAL
Use After Free (CWE-416)
2026-05-12 microsoft GHSA-h659-hh52-mv97
Denial Of Service Use After Free Memory Corruption Microsoft
9.3
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

1
CVE Published
May 12, 2026 - 16:59 nvd
CRITICAL 9.3

DescriptionNVD

Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.

Analysis

Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.

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EUVD-2026-29663 vulnerability details – vuln.today
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