critical9.6
CVE-2026-42904
Heap-based buffer overflow in Windows TCP/IP allows an unauthorized attacker to elevate privileges over an adjacent network.
Impact
Heap-based buffer overflow in Windows TCP/IP allows an unauthorized attacker to elevate privileges over an adjacent network.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Windows 10 21h2 | before 10.0.19044.7417 |
| Microsoft | Windows 10 22h2 | before 10.0.19045.7417 |
| Microsoft | Windows 11 23h2 | before 10.0.22631.7219 |
| Microsoft | Windows 11 24h2 | before 10.0.26100.8655 |
| Microsoft | Windows 11 25h2 | before 10.0.26200.8655 |
| Microsoft | Windows 11 26h1 | before 10.0.28000.2269 |
| Microsoft | Windows Server 2022 | before 10.0.20348.5256 |
| Microsoft | Windows Server 2025 | before 10.0.26100.32995 |