CVE-2026-20863

Summary

Double free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.

Affected Software

VendorProductVersion RangeStatus
MicrosoftWindows 11 version 22H310.0.22631.0 < 10.0.22631.6491affected
MicrosoftWindows 11 Version 23H210.0.22631.0 < 10.0.22631.6491affected
MicrosoftWindows 11 Version 24H210.0.26100.0 < 10.0.26100.7623affected
MicrosoftWindows 11 Version 25H210.0.26200.0 < 10.0.26200.7623affected
MicrosoftWindows Server 202210.0.20348.0 < 10.0.20348.4648affected
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.0 < 10.0.25398.2092affected
MicrosoftWindows Server 202510.0.26100.0 < 10.0.26100.32230affected
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 < 10.0.26100.32230affected

Weaknesses

  • CWE-415: CWE-415: Double Free

ADP Enrichment

CISA ADP Vulnrichment

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

References