Description
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – < 10.0.17763.3887, 10.0.0 – < 10.0.17763.3887 | 10.0.17763.3887 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – < 10.0.17763.3887 | 10.0.17763.3887 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – < 10.0.17763.3887 | 10.0.17763.3887 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – < 10.0.20348.1487 | 10.0.20348.1487 |
| Microsoft | Windows 10 Version 20H2 | 10.0.0 – < 10.0.19042.2486 | 10.0.19042.2486 |
| Microsoft | Windows 11 version 21H2 | 10.0.0 – < 10.0.22000.1455 | 10.0.22000.1455 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19043.0 – < 10.0.19044.2486 | 10.0.19044.2486 |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – < 10.0.22621.1105 | 10.0.22621.1105 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – < 10.0.19045.2486 | 10.0.19045.2486 |
| Microsoft | Windows 10 Version 1507 | 10.0.10240.0 – < 10.0.10240.19685 | 10.0.10240.19685 |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – < 10.0.14393.5648 | 10.0.14393.5648 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – < 10.0.14393.5648 | 10.0.14393.5648 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – < 10.0.14393.5648 | 10.0.14393.5648 |
| Microsoft | Windows 8.1 | 6.3.0 – < 6.3.9600.20778 | 6.3.9600.20778 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 – < 6.3.9600.20778 | 6.3.9600.20778 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 – < 6.3.9600.20778 | 6.3.9600.20778 |
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
-
hd3s5aa/CVE-2023-21674 ★ 42 · Mar 7, 2024
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- WID-SEC-2023-0055 Microsoft Windows und Microsoft Windows Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 14, 2025
- MSRC-CVE-2023-21674 Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability Microsoft Security Response Center · Jan 10, 2023