Description
Improper link resolution before file access ('link following') in Windows Update Service allows an authorized attacker to elevate privileges locally.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – < 10.0.14393.8246 | 10.0.14393.8246 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – < 10.0.17763.7558 | 10.0.17763.7558 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – < 10.0.19044.6093 | 10.0.19044.6093 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – < 10.0.19045.6093 | 10.0.19045.6093 |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – < 10.0.22621.5624 | 10.0.22621.5624 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 – < 10.0.22631.5624 | 10.0.22631.5624 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – < 10.0.22631.5624 | 10.0.22631.5624 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – < 10.0.26100.4652 | 10.0.26100.4652 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.4652 | 10.0.26100.4652 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.4652 | 10.0.26100.4652 |
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 3 repositories
-
Wh04m1001/CVE-2025-48799 ★ 270 · Jul 8, 2025
-
gmh5225/CVE-2025-48799- ★ 0 · Sep 2, 2025
Sample exploit of patched vulnerability
-
painoob/CVE-2025-48799 ★ 0 · Aug 5, 2025
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 4
- WID-SEC-2025-1850 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Nov 17, 2025
- WID-SEC-2025-1495 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 2, 2025
- NCSC-2025-0213 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Jul 8, 2025
- MSRC-CVE-2025-48799 Windows Update Service Elevation of Privilege Vulnerability Microsoft Security Response Center · Jul 8, 2025
References
- Windows Update Service Elevation of Privilege Vulnerability vendor-advisory patch