CVE-2026-50501

Microsoft · Published July 14, 2026

7.8

CVSS v3.1

HIGH

Patch availableGet patch

Description

Windows Resilient File System (ReFS) Remote Code Execution Vulnerability. Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code locally.

Affected Products

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

CVSS Vector

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