Description
Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – < 10.0.26100.8457 | 10.0.26100.8457 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 – < 10.0.26200.8457 | 10.0.26200.8457 |
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0 – < 10.0.28000.2113 | 10.0.28000.2113 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.32860 | 10.0.26100.32860 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.32860 | 10.0.26100.32860 |
Advisories 3
- WID-SEC-2026-1489 Microsoft Windows Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 8, 2026
- NCSC-2026-0141 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Jun 2, 2026
- MSRC-CVE-2026-40405 Windows TCP/IP Denial of Service Vulnerability Microsoft Security Response Center · May 12, 2026
References
- Windows TCP/IP Denial of Service Vulnerability vendor-advisory patch