CVE-2026-50424: Windows Domain Controller Denial of Service Vulnerability

Overview

Severity

High (CVSS 7.5)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Category

Denial of Service

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Jul

Released

2026-07-14

Description

Untrusted pointer dereference in Windows Domain Controller allows an unauthorized attacker to deny service over a network.

Affected Products (8)

Windows

• Windows Server 2025 (Server Core installation)
• Windows 11 Version 25H2 for ARM64-based Systems
• Windows 11 Version 25H2 for x64-based Systems
• Windows 11 Version 24H2 for ARM64-based Systems
• Windows 11 Version 24H2 for x64-based Systems
• Windows Server 2025
• Windows 11 version 26H1 for x64-based Systems
• Windows 11 Version 26H1 for ARM64-based Systems

Security Updates (4)

• 5099536
• 5101650
• 5095051
• 5101649

Acknowledgments

[Yuval Gordon](https://x.com/yug0rd) with Akamai, [Yuval Gordon](https://x.com/yug0rd) with Akamai

Revision History

• 2026-07-14: Information published.