CVE-2026-69617
Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability
CVSS Score
7.0
EPSS Score
0.0%
EPSS Percentile
0th
Out-of-bounds read in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
| Vendor | microsoft |
| Product | windows 11 version 26h1 |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Sep 8, 2026 |
| Last Updated | Sep 15, 2026 |
Stay Ahead of the Next One
Get instant alerts for microsoft windows 11 version 26h1
Be the first to know when new high vulnerabilities affecting microsoft windows 11 version 26h1 are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / Windows 11 version 26H1
10.0.28000.0 < 10.0.28000.2954
Microsoft / Windows Server 2025
10.0.26100.0 < 10.0.26100.33438
Microsoft / Windows Server 2025 (Server Core installation)
10.0.26100.0 < 10.0.26100.33438