VDB

CVE-2026-40402

CVE-2026-40402 PUBLISHED CVSS 9.300000190734863 CRITICAL

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

EPSS 0.06% · 18.2th percentile

Risk Scores

CVSS 3.1
9.300000190734863
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
EPSS Score
0.06%
18.2th percentile

Affected Products

VendorProductVersions
microsoftwindows_server_202210.0.20348.0, 10.0.20348.0, 10.0.20348.0
MicrosoftWindows Server 202210.0.20348.0, 10.0.20348.0, 10.0.20348.0
MicrosoftWindows 11 version 22H310.0.22631.0, 10.0.22631.0, 10.0.22631.0
microsoftwindows_11_23H210.0.22631.0, 10.0.22631.0, 10.0.22631.0
MicrosoftWindows 11 Version 23H210.0.22631.0, 10.0.22631.0, 10.0.22631.0

Timeline

  • May 12, 2026 CVE Published
  • May 12, 2026 PoC Published
  • May 12, 2026 PoC Published
  • May 13, 2026 PoC Published
  • May 13, 2026 PoC Published
  • May 13, 2026 Security Advisory
  • May 13, 2026 Security Advisory
  • May 13, 2026 Security Advisory
  • May 13, 2026 Security Advisory
  • May 13, 2026 Security Advisory
  • May 13, 2026 Security Advisory
  • May 13, 2026 Security Advisory

References

…and 53 more

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