CVE-2026-50441

Microsoft · Published July 22, 2026

7.8

CVSS v3.1

HIGH

Patch availableGet patch

Description

Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability. Untrusted pointer dereference in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.

Affected Products

Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for x64-based Systems
Windows Server 2019
Windows Server 2019 (Server Core installation)

CVSS Vector

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