High severity7.0NVD Advisory· Published Sep 8, 2026· Updated Sep 8, 2026
CVE-2026-83999
CVE-2026-83999
Description
Improper link resolution before file access ('link following') in Windows Resilient File System (ReFS) Deduplication Service allows an authorized attacker to elevate privileges locally.
Affected products
1Patches
Vulnerability mechanics
References
1News mentions
1- Massive Microsoft Patch Tuesday September 2026 – 973 Vulnerabilities Fixed, Including 2 Zero-DaysCyber Security News · Sep 8, 2026