high8.3
CVE-2026-56179
Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.
Impact
Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Windows 11 24h2 | before 10.0.26100.9106 |
| Microsoft | Windows 11 25h2 | before 10.0.26200.9106 |
| Microsoft | Windows 11 26h1 | before 10.0.28000.2704 |
| Microsoft | Windows Server 2025 | before 10.0.26100.33222 |