CVEvulnerability
CVE-2026-83999
7.0 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-09-08
- Last modified
- 2026-09-11
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-59
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 configurations
• microsoft windows 11 24h2 (< 10.0.26100.9445)
• microsoft windows 11 25h2 (< 10.0.26200.9445)
• microsoft windows 11 26h1 (< 10.0.28000.2954)
• microsoft windows server 2025 (< 10.0.26100.33438)
Related
Weakness · CWE (1)
- CWE-59 Improper Link Resolution Before File Access weakness
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83999 Patch, Vendor Advisory