high7.5
CVE-2026-40406
Use after free in Windows TCP/IP allows an unauthorized attacker to disclose information over a network.
Impact
Use after free in Windows TCP/IP allows an unauthorized attacker to disclose information over a network.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Windows 10 1607 | before 10.0.14393.9140 |
| Microsoft | Windows 10 1809 | before 10.0.17763.8755 |
| Microsoft | Windows 10 21h2 | before 10.0.19044.7291 |
| Microsoft | Windows 10 22h2 | before 10.0.19045.7291 |
| Microsoft | Windows 11 23h2 | before 10.0.22631.7079 |
| Microsoft | Windows 11 24h2 | before 10.0.26100.8390 |
| Microsoft | Windows 11 25h2 | before 10.0.26200.8390 |
| Microsoft | Windows 11 26h1 | before 10.0.28000.2113 |
| Microsoft | Windows Server 2012 | All versions Version r2 |
| Microsoft | Windows Server 2016 | before 10.0.14393.9140 |
| Microsoft | Windows Server 2019 | before 10.0.17763.8755 |
| Microsoft | Windows Server 2022 | before 10.0.20348.5074 |