CVE-2026-40402

Summary

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

Affected Software

VendorProductVersion RangeStatus
MicrosoftWindows 11 version 23H210.0.22631.0 < 10.0.22631.7079affected
MicrosoftWindows 11 Version 23H210.0.22631.0 < 10.0.22631.7219affected
MicrosoftWindows Server 202210.0.20348.0 < 10.0.20348.5139affected

Weaknesses

  • CWE-416: CWE-416: Use After Free

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References