Description
Out-of-bounds read in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges locally.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – < 10.0.17763.8644 | 10.0.17763.8644 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – < 10.0.19044.7184 | 10.0.19044.7184 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – < 10.0.19045.7184 | 10.0.19045.7184 |
| Microsoft | Windows 11 version 23H2 | 10.0.22631.0 – < 10.0.22631.6936 | 10.0.22631.6936 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – < 10.0.26100.8246 | 10.0.26100.8246 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 – < 10.0.26200.8246 | 10.0.26200.8246 |
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0 – < 10.0.28000.1836 | 10.0.28000.1836 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – < 10.0.17763.8644 | 10.0.17763.8644 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – < 10.0.17763.8644 | 10.0.17763.8644 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – < 10.0.20348.5020 | 10.0.20348.5020 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – < 10.0.25398.2274 | 10.0.25398.2274 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.32690 | 10.0.26100.32690 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.32690 | 10.0.26100.32690 |
Advisories 3
- WID-SEC-2026-1104 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 27, 2026
- NCSC-2026-0119 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Apr 15, 2026
- MSRC-CVE-2026-26153 Windows Encrypted File System (EFS) Elevation of Privilege Vulnerability Microsoft Security Response Center · Apr 14, 2026
References
- Windows Encrypted File System (EFS) Elevation of Privilege Vulnerability vendor-advisory patch