Sep 2026: Microsoft Failover Cluster Remote Code Execution Vulnerability
CVE-2026-78444 Published on September 8, 2026

Microsoft Failover Cluster Remote Code Execution Vulnerability
Untrusted pointer dereference in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.

Vendor Advisory NVD

Weakness Type

Untrusted Pointer Dereference

The program obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.


Products Associated with CVE-2026-78444

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Affected Versions

Microsoft Windows 10 Version 1809: Microsoft Windows Server 2019: Microsoft Windows Server 2019 (Server Core installation): Microsoft Windows Server 2022: Microsoft Windows Server 2025: Microsoft Windows Server 2025 (Server Core installation):