CVE-2026-34337

Microsoft · Published May 12, 2026

7.8

CVSS v3.1

HIGH

Patch availableGet patch

Description

Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability. Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

Affected Products

Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows 10 Version 21H2 for ARM64-based Systems
Windows Server 2019

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