CVE-2026-40405

Summary

Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over a network.

Affected Software

VendorProductVersion RangeStatus
MicrosoftWindows 11 Version 24H210.0.26100.0 < 10.0.26100.8457affected
MicrosoftWindows 11 Version 25H210.0.26200.0 < 10.0.26200.8457affected
MicrosoftWindows 11 version 26H110.0.28000.0 < 10.0.28000.2113affected
MicrosoftWindows Server 202510.0.26100.0 < 10.0.26100.32860affected
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 < 10.0.26100.32860affected

Weaknesses

  • CWE-476: CWE-476: NULL Pointer Dereference

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References