CVE-2024-21416: Windows TCP/IP Remote Code Execution Vulnerability

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-09-10 · updated 2026-08-10
Weakness: CWE-122

Description

Windows TCP/IP Remote Code Execution Vulnerability

Affected products

Microsoft Windows 10: before 10.0.17763.6293 — fixed in 10.0.17763.6293
Microsoft Windows 10: before 10.0.19044.4894 — fixed in 10.0.19044.4894
Microsoft Windows 10: before 10.0.19045.4894 — fixed in 10.0.19045.4894
Microsoft Windows 11 21H2: before 10.0.22000.3197 — fixed in 10.0.22000.3197
Microsoft Windows 11: before 10.0.22621.4169 — fixed in 10.0.22621.4169
Microsoft Windows 11: before 10.0.22631.4169 — fixed in 10.0.22631.4169
Microsoft Windows 11: before 10.0.26100.1742 — fixed in 10.0.26100.1742
Microsoft Windows Server 2019: before 10.0.17763.6293 — fixed in 10.0.17763.6293
Microsoft Windows Server 2022: before 10.0.20348.2700 — fixed in 10.0.20348.2700
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): before 10.0.25398.1128 — fixed in 10.0.25398.1128
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.6293 — fixed in 10.0.17763.6293
Microsoft Windows 10: from 10.0.19043.0 before 10.0.19044.4894 — fixed in 10.0.19044.4894
Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.4894 — fixed in 10.0.19045.4894
Microsoft Windows 11 21H2: from 10.0.0 before 10.0.22000.3197 — fixed in 10.0.22000.3197
Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.4169 — fixed in 10.0.22621.4169
Microsoft Windows 11 version 22H3: from 10.0.22631.0 before 10.0.22631.4169 — fixed in 10.0.22631.4169
Microsoft Windows 11: from 10.0.22631.0 before 10.0.22631.4169 — fixed in 10.0.22631.4169
Microsoft Windows 11: from 10.0.26100.0 before 10.0.26100.1742 — fixed in 10.0.26100.1742
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.6293 — fixed in 10.0.17763.6293
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.2700 — fixed in 10.0.20348.2700
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): from 10.0.25398.0 before 10.0.25398.1128 — fixed in 10.0.25398.1128

How to fix

Upgrade to a fixed version: Microsoft Windows 10 10.0.17763.6293; Microsoft Windows 10 10.0.19044.4894; Microsoft Windows 10 10.0.19045.4894; Microsoft Windows 11 21H2 10.0.22000.3197; Microsoft Windows 11 10.0.22621.4169; Microsoft Windows 11 10.0.22631.4169; Microsoft Windows 11 10.0.26100.1742; Microsoft Windows Server 2019 10.0.17763.6293; Microsoft Windows Server 2022 10.0.20348.2700; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1128; Microsoft Windows 10 10.0.17763.6293; Microsoft Windows 10 10.0.19044.4894. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21416

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