Description
Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – < 10.0.17763.6775 | 10.0.17763.6775 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – < 10.0.19044.5371 | 10.0.19044.5371 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – < 10.0.19045.5371 | 10.0.19045.5371 |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – < 10.0.22621.4751 | 10.0.22621.4751 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 – < 10.0.22631.4751 | 10.0.22631.4751 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – < 10.0.22631.4751 | 10.0.22631.4751 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – < 10.0.26100.2894 | 10.0.26100.2894 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – < 10.0.17763.6775 | 10.0.17763.6775 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – < 10.0.17763.6775 | 10.0.17763.6775 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – < 10.0.20348.3091 | 10.0.20348.3091 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – < 10.0.25398.1369 | 10.0.25398.1369 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.2894 | 10.0.26100.2894 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.2894 | 10.0.26100.2894 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
gduma-phData/patch-CVE-2025-21340 ★ 0 · Aug 24, 2026
Patch: Use-after-free (Linux Kernel)
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- WID-SEC-2025-0091 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 25, 2025
- NCSC-2025-0010 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Jan 14, 2025
- MSRC-CVE-2025-21340 Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability Microsoft Security Response Center · Jan 14, 2025
References
- Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability vendor-advisory patch