CVE-2021-40463

HIGH

Windows 10, 11 21H2, 8.1, RT 8.1, Server 2012 - Denial of Service in Network Address Translation

Title source: llm

Windows Network Address Translation (NAT) Denial of Service Vulnerability

Core 1

Core References

Patch, Vendor Advisory x_refsource_misc

CVSS v3 7.7

EPSS 0.0244

EPSS Percentile 82.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Status published

Products (16)

microsoft/windows_10 (2 CPE variants)

microsoft/windows_10 20h2 (3 CPE variants)

microsoft/windows_10 21h1 (3 CPE variants)

microsoft/windows_10 1607 (2 CPE variants)

microsoft/windows_10 1809 (3 CPE variants)

microsoft/windows_10 1909 (3 CPE variants)

microsoft/windows_10 2004 (3 CPE variants)

microsoft/windows_11_21h2 (2 CPE variants)

microsoft/windows_8.1 (2 CPE variants)

microsoft/windows_rt_8.1

... and 6 more

Published Oct 13, 2021

Tracked Since Feb 18, 2026