CVE-2026-42904

Summary

Heap-based buffer overflow in Windows TCP/IP allows an unauthorized attacker to elevate privileges over an adjacent network.

Affected Software

VendorProductVersion RangeStatus
MicrosoftWindows 10 Version 21H210.0.19044.0 < 10.0.19044.7417affected
MicrosoftWindows 10 Version 22H210.0.19045.0 < 10.0.19045.7417affected
MicrosoftWindows 11 version 23H210.0.22631.0 < 10.0.22631.7219affected
MicrosoftWindows 11 Version 23H210.0.22631.0 < 10.0.22631.7219affected
MicrosoftWindows 11 Version 24H210.0.26100.0 < 10.0.26100.8655affected
MicrosoftWindows 11 Version 25H210.0.26200.0 < 10.0.26200.8655affected
MicrosoftWindows 11 version 26H110.0.28000.0 < 10.0.28000.2269affected
MicrosoftWindows Server 202210.0.20348.0 < 10.0.20348.5256affected
MicrosoftWindows Server 202510.0.26100.0 < 10.0.26100.32995affected
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 < 10.0.26100.32995affected

Weaknesses

  • CWE-122: CWE-122: Heap-based Buffer Overflow

ADP Enrichment

CISA ADP Vulnrichment

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

References