7.8
High
CVE-2026-23673 Out-of-bounds read in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally
Description
Out-of-bounds read in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10 Version 1607 10.0 | 10.0.14393.0 → < 10.0.14393.8957 | 10.0.14393.8957 |
| Windows 10 Version 1809 10.0 | 10.0.17763.0 → < 10.0.17763.8511 | 10.0.17763.8511 |
| Windows 10 Version 21H2 10.0 | 10.0.19044.0 → < 10.0.19044.7058 | 10.0.19044.7058 |
| Windows 10 Version 22H2 10.0 | 10.0.19045.0 → < 10.0.19045.7058 | 10.0.19045.7058 |
| Windows 11 version 22H3 10.0 | 10.0.22631.0 → < 10.0.22631.6783 | 10.0.22631.6783 |
| Windows 11 Version 23H2 10.0 | 10.0.22631.0 → < 10.0.22631.6783 | 10.0.22631.6783 |
| Windows 11 Version 24H2 10.0 | 10.0.26100.0 → < 10.0.26100.8037 | 10.0.26100.8037 |
| Windows 11 Version 25H2 10.0 | 10.0.26200.0 → < 10.0.26200.8037 | 10.0.26200.8037 |
| Windows 11 version 26H1 10.0 | 10.0.28000.0 → < 10.0.28000.1719 | 10.0.28000.1719 |
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| Product | Affected versions | Fixed in |
|---|---|---|
| Windows Server 2012 6.2 | 6.2.9200.0 → < 6.2.9200.25973 | 6.2.9200.25973 |
| Windows Server 2012 (Server Core installation) 6.2 | 6.2.9200.0 → < 6.2.9200.25973 | 6.2.9200.25973 |
| Windows Server 2012 R2 6.3 | 6.3.9600.0 → < 6.3.9600.23074 | 6.3.9600.23074 |
| Windows Server 2012 R2 (Server Core installation) 6.3 | 6.3.9600.0 → < 6.3.9600.23074 | 6.3.9600.23074 |
| Windows Server 2016 10.0 | 10.0.14393.0 → < 10.0.14393.8957 | 10.0.14393.8957 |
| Windows Server 2016 (Server Core installation) 10.0 | 10.0.14393.0 → < 10.0.14393.8957 | 10.0.14393.8957 |
| Windows Server 2019 10.0 | 10.0.17763.0 → < 10.0.17763.8511 | 10.0.17763.8511 |
| Windows Server 2019 (Server Core installation) 10.0 | 10.0.17763.0 → < 10.0.17763.8511 | 10.0.17763.8511 |
| Windows Server 2022 10.0 | 10.0.20348.0 → < 10.0.20348.4893 | 10.0.20348.4893 |
| Windows Server 2022, 23H2 Edition (Server Core installation) 10.0 | 10.0.25398.0 → < 10.0.25398.2207 | 10.0.25398.2207 |
| Windows Server 2025 10.0 | 10.0.26100.0 → < 10.0.26100.32522 | 10.0.26100.32522 |
| Windows Server 2025 (Server Core installation) 10.0 | 10.0.26100.0 → < 10.0.26100.32522 | 10.0.26100.32522 |
References
- Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability msrc.microsoft.com
Timeline
- Published
- Last modified
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