CVE-2024-21416HighCVSS 8.1

Windows TCP/IP Remote Code Execution Vulnerability

Published
May 31, 2026
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2024-21416 →

📋 Description

Windows 11, version 24H2 is not generally available yet. Why are there updates for this version of Windows listed in the Security Updates table? The new Copilot+ devices that are now publicly available come with Windows 11, version 24H2 installed. Customers with these devices need to know about any vulnerabilities that affect their machine and to install the updates if they are not receiving automatic updates. Note that the general availability date for Windows 11, version 24H2 is scheduled for later this year.

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to have a deep understanding of the system and the ability to manipulate its components to trigger a specific condition. Successful exploitation is not guaranteed and depends on a combination of factors that may include the environment, system configuration, and the presence of additional security measures.

How could an attacker exploit this vulnerability? An attacker must send a specially crafted request to a Windows machine that has NetNAT service configured, which is a non-default configuration. In addition, specific network conditions must exist for exploitation to succeed.

🎯 Affected products21

  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 21H2 for 32-bit Systems
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows 10 Version 22H2 for 32-bit Systems
  • Windows 10 Version 22H2 for ARM64-based Systems
  • Windows 10 Version 22H2 for x64-based Systems
  • Windows 11 Version 22H2 for ARM64-based Systems
  • Windows 11 Version 22H2 for x64-based Systems
  • Windows 11 Version 23H2 for ARM64-based Systems
  • Windows 11 Version 23H2 for x64-based Systems
  • Windows 11 Version 24H2 for ARM64-based Systems
  • Windows 11 Version 24H2 for x64-based Systems
  • Windows 11 version 21H2 for ARM64-based Systems
  • Windows 11 version 21H2 for x64-based Systems
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server 2022
  • Windows Server 2022 (Server Core installation)
  • Windows Server 2022, 23H2 Edition (Server Core installation)

✅ Remediation

KB5043050 (Security Update) — fixed build 10.0.17763.6293 KB5042881 (Security Update) — fixed build 10.0.20348.2700 KB5042880 (SecurityHotpatchUpdate) — fixed build 10.0.20348.2695 KB5043067 (Security Update) — fixed build 10.0.22000.3197 KB5043064 (Security Update) — fixed build 10.0.19044.4894 KB5043076 (Security Update) — fixed build 10.0.22621.4169 KB5043064 (Security Update) — fixed build 10.0.19045.4894 KB5043076 (Security Update) — fixed build 10.0.22631.4169 KB5043055 (Security Update) — fixed build 10.0.25398.1128 KB5043080 (Security Update) — fixed build 10.0.26100.1742

🔗 References (17)