Skip to content
CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-23673

Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability

Description

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

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Microsoft Windows 10 Version 1607

  • 10.0.14393.0 to < 10.0.14393.8957affected

Microsoft Windows 10 Version 1809

  • 10.0.17763.0 to < 10.0.17763.8511affected

Microsoft Windows 10 Version 21H2

  • 10.0.19044.0 to < 10.0.19044.7058affected

Microsoft Windows 10 Version 22H2

  • 10.0.19045.0 to < 10.0.19045.7058affected

Microsoft Windows 11 version 22H3

  • 10.0.22631.0 to < 10.0.22631.6783affected

Microsoft Windows 11 Version 23H2

  • 10.0.22631.0 to < 10.0.22631.6783affected

Microsoft Windows 11 Version 24H2

  • 10.0.26100.0 to < 10.0.26100.8037affected

Microsoft Windows 11 Version 25H2

  • 10.0.26200.0 to < 10.0.26200.8037affected

Microsoft Windows 11 version 26H1

  • 10.0.28000.0 to < 10.0.28000.1719affected

Microsoft Windows Server 2012

  • 6.2.9200.0 to < 6.2.9200.25973affected

Microsoft Windows Server 2012 (Server Core installation)

  • 6.2.9200.0 to < 6.2.9200.25973affected

Microsoft Windows Server 2012 R2

  • 6.3.9600.0 to < 6.3.9600.23074affected

Microsoft Windows Server 2012 R2 (Server Core installation)

  • 6.3.9600.0 to < 6.3.9600.23074affected

Microsoft Windows Server 2016

  • 10.0.14393.0 to < 10.0.14393.8957affected

Microsoft Windows Server 2016 (Server Core installation)

  • 10.0.14393.0 to < 10.0.14393.8957affected

Microsoft Windows Server 2019

  • 10.0.17763.0 to < 10.0.17763.8511affected

Microsoft Windows Server 2019 (Server Core installation)

  • 10.0.17763.0 to < 10.0.17763.8511affected

Microsoft Windows Server 2022

  • 10.0.20348.0 to < 10.0.20348.4893affected

Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)

  • 10.0.25398.0 to < 10.0.25398.2207affected

Microsoft Windows Server 2025

  • 10.0.26100.0 to < 10.0.26100.32522affected

Microsoft Windows Server 2025 (Server Core installation)

  • 10.0.26100.0 to < 10.0.26100.32522affected

References