CVE-2026-40402CRITICAL 9.3EPSS p24.9%

CVE-2026-40402CVE-2026-40402

Description

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

Scoring

CVSS 3.19.3 (CRITICAL)
VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS0.33% probability of exploitation · percentile 24.9% · 2026-06-19T12:03:05Z
Published2026-05-12
Last modified2026-05-15

Underlying weaknesses· 1

CWE-416

References

  1. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40402

1

TypeTargetConfidenceTier
WeaknessUse After Freecwe-4160%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.