CVE-2026-21232

Summary

Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.

Affected Software

VendorProductVersion RangeStatus
MicrosoftWindows 11 version 22H310.0.22631.0 < 10.0.22631.6649affected
MicrosoftWindows 11 Version 23H210.0.22631.0 < 10.0.22631.6649affected
MicrosoftWindows 11 Version 24H210.0.26100.0 < 10.0.26100.7840affected
MicrosoftWindows 11 Version 25H210.0.26200.0 < 10.0.26200.7840affected
MicrosoftWindows 11 version 26H110.0.28000.0 < 10.0.28000.1575affected
MicrosoftWindows 11 Version 26H110.0.28000.0 < 10.0.28000.1575affected
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.0 < 10.0.25398.2149affected
MicrosoftWindows Server 202510.0.26100.0 < 10.0.26100.32370affected
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 < 10.0.26100.32370affected

Weaknesses

  • CWE-822: CWE-822: Untrusted Pointer Dereference

ADP Enrichment

CISA ADP Vulnrichment

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

References