Description
Reliance on untrusted inputs in a security decision in Windows Boot Loader allows an authorized attacker to bypass a security feature locally.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – < 10.0.14393.9060 | 10.0.14393.9060 |
| 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 Server 2016 | 10.0.14393.0 – < 10.0.14393.9060 | 10.0.14393.9060 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – < 10.0.14393.9060 | 10.0.14393.9060 |
| 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 |
Advisories 4
- WID-SEC-2026-1104 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 27, 2026
- WID-SEC-2026-1730 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jul 16, 2026
- NCSC-2026-0119 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Apr 15, 2026
- MSRC-CVE-2026-0390 UEFI Secure Boot Security Feature Bypass Vulnerability Microsoft Security Response Center · Apr 14, 2026
References
- UEFI Secure Boot Security Feature Bypass Vulnerability vendor-advisory patch