Description
Incorrect authorization in Windows SMB Client allows an authorized attacker to bypass a security feature locally.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 11 version 23H2 | 10.0.22631.0 – < 10.0.22631.7652 | 10.0.22631.7652 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – < 10.0.26100.9711 | 10.0.26100.9711 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 – < 10.0.26200.9711 | 10.0.26200.9711 |
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0 – < 10.0.28000.3231 | 10.0.28000.3231 |
| Microsoft | Windows 11 Version 26H2 | 10.0.26300.0 – < 10.0.26300.9711 | 10.0.26300.9711 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – < 10.0.20348.5761 | 10.0.20348.5761 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.33650 | 10.0.26100.33650 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.33650 | 10.0.26100.33650 |
Advisories 2
- WID-SEC-2026-3892 Microsoft Windows und Windows Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 8, 2026
- MSRC-CVE-2026-84011 Windows SMB Client Security Feature Bypass Vulnerability Microsoft Security Response Center · Oct 13, 2026
References
- Windows SMB Client Security Feature Bypass Vulnerability vendor-advisory patch