CVE-2026-56179

Summary

Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.

Affected Software

VendorProductVersion RangeStatus
MicrosoftWindows 11 Version 24H210.0.26100.0 < 10.0.26100.9168affected
MicrosoftWindows 11 Version 25H210.0.26200.0 < 10.0.26200.9168affected
MicrosoftWindows 11 version 26H110.0.28000.0 < 10.0.28000.2704affected
MicrosoftWindows Server 202510.0.26100.0 < 10.0.26100.33296affected
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 < 10.0.26100.33296affected

Weaknesses

  • CWE-346: CWE-346: Origin Validation Error

References