9.6
Critical
CVE-2026-42904 Heap-based buffer overflow in Windows TCP/IP allows an unauthorized attacker to elevate privileges over an adjacent…
Description
Heap-based buffer overflow in Windows TCP/IP allows an unauthorized attacker to elevate privileges over an adjacent network.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10 Version 21H2 10.0 | 10.0.19044.0 → < 10.0.19044.7417 | 10.0.19044.7417 |
| Windows 10 Version 22H2 10.0 | 10.0.19045.0 → < 10.0.19045.7417 | 10.0.19045.7417 |
| Windows 11 Version 23H2 10.0 | 10.0.22631.0 → < 10.0.22631.7219 | 10.0.22631.7219 |
| Windows 11 Version 24H2 10.0 | 10.0.26100.0 → < 10.0.26100.8655 | 10.0.26100.8655 |
| Windows 11 Version 25H2 10.0 | 10.0.26200.0 → < 10.0.26200.8655 | 10.0.26200.8655 |
| Windows 11 version 26H1 10.0 | 10.0.28000.0 → < 10.0.28000.2269 | 10.0.28000.2269 |
| Windows Server 2022 10.0 | 10.0.20348.0 → < 10.0.20348.5256 | 10.0.20348.5256 |
| Windows Server 2025 10.0 | 10.0.26100.0 → < 10.0.26100.32995 | 10.0.26100.32995 |
| Windows Server 2025 (Server Core installation) 10.0 | 10.0.26100.0 → < 10.0.26100.32995 | 10.0.26100.32995 |
References
- Windows TCP/IP Elevation of Privilege Vulnerability msrc.microsoft.com
Timeline
- Published
- Last modified
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