PT-2026-88144 · Microsoft · Windows 11 Version 24H2+3

CVE-2026-83999

·

Published

2026-09-08

·

Updated

2026-09-08

CVSS v3.1

7.0

High

VectorAV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Improper link resolution before file access ('link following') in Windows Resilient File System (ReFS) Deduplication Service allows an authorized attacker to elevate privileges locally.

Fix

Link Following

Found an issue in the description? Have something to add? Feel free to write us 👾

Weakness Enumeration

Related Identifiers

CVE-2026-83999

Affected Products

Windows 11 Version 24H2
Windows 11 Version 25H2
Windows 11 Version 26H1
Windows Server 2025