Vulnerability · NVD
CVE-2026-40405
HIGH 7.5
Vendor bulletin scale — NVD CVSS pending
Windows TCP/IP Denial of Service Vulnerability
EPSS
1.08%
above median
percentile 61.9%
OS versions that fix this CVE
This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.
- Windows Server 2025 Fixed in 10.0.26100.32860
- Windows 11 26H1 · 2026-H1 Fixed in 10.0.28000.2113
- Windows 11 25H2 · 2025-H2 Fixed in 10.0.26200.8457
- Windows 11 24H2 · 2024-H2 Fixed in 10.0.26100.8457