Vulnerability · Published Jul 8, 2025 · Assigned by microsoft
CVE-2025-48799Windows Update Service Elevation of Privilege Vulnerability
High 7.8
In plain English
A high-severity security flaw in Windows 10 Version 1607 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 71% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)1.3%top 28.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
Improper link resolution before file access ('link following') in Windows Update Service allows an authorized attacker to elevate privileges locally.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – before 10.0.14393.8246 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – before 10.0.17763.7558 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – before 10.0.19044.6093 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – before 10.0.19045.6093 |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – before 10.0.22621.5624 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 – before 10.0.22631.5624 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – before 10.0.22631.5624 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – before 10.0.26100.4652 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – before 10.0.26100.4652 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – before 10.0.26100.4652 |
Weakness: CWE-59 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Windows Update Service Elevation of Privilege Vulnerability vendor-advisory, patch
- https://www.vicarius.io/vsociety/posts/cve-2025-48799-mitigation-script-elevation-of-privilege-vulnerability-in-windows-update-service
- https://www.vicarius.io/vsociety/posts/cve-2025-48799-detection-script-elevation-of-privilege-vulnerability-in-windows-update-service