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Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

MicrosoftCVE-2026-69617

Microsoft Windows: out-of-bounds read

Microsoft

CVE-2026-69617 · Published Sep 8, 2026 · updated Sep 21, 2026

High7.0
Fix: upgrade to 10.0.28000.2954 or later (3 fixed versions below)
Microsoft advisory

Out-of-bounds read in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.

Affected versions

PackageAffectedFixed in
Windows 11 version 26H1
Product
>= 10.0.28000.0, < 10.0.28000.295410.0.28000.2954
Windows Server 2025
Product
>= 10.0.26100.0, < 10.0.26100.3343810.0.26100.33438
Windows Server 2025 (Server Core installation)
Product
>= 10.0.26100.0, < 10.0.26100.3343810.0.26100.33438
Details and references
CVSS 3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-125

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