Vulnerability Description
Improper link resolution before file access ('link following') in Windows Update Service allows an authorized attacker to elevate privileges locally.
CVSS Score
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 1607 | < 10.0.14393.8246 |
| Microsoft | Windows 10 1809 | < 10.0.17763.7558 |
| Microsoft | Windows 10 21H2 | < 10.0.19044.6093 |
| Microsoft | Windows 10 22H2 | < 10.0.19045.6093 |
| Microsoft | Windows 11 22H2 | < 10.0.22621.5624 |
| Microsoft | Windows 11 23H2 | < 10.0.22631.5624 |
| Microsoft | Windows 11 24H2 | < 10.0.26100.4652 |
| Microsoft | Windows Server 2025 | < 10.0.26100.4652 |
Related Weaknesses (CWE)
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48799Vendor Advisory
- https://www.vicarius.io/vsociety/posts/cve-2025-48799-detection-script-elevationExploitThird Party Advisory
- https://www.vicarius.io/vsociety/posts/cve-2025-48799-mitigation-script-elevatioExploitMitigationThird Party Advisory
FAQ
What is CVE-2025-48799?
CVE-2025-48799 is a vulnerability with a CVSS score of 7.8 (HIGH). Improper link resolution before file access ('link following') in Windows Update Service allows an authorized attacker to elevate privileges locally.
How severe is CVE-2025-48799?
CVE-2025-48799 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-48799?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21H2, Microsoft Windows 10 22H2, Microsoft Windows 11 22H2.