Vulnerability · Published Apr 8, 2025 · Assigned by microsoft
CVE-2025-21204Windows Process Activation Elevation of Privilege Vulnerability
High 7.8
In plain English
A high-severity security flaw in Windows 10 Version 1507 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 7.1% (higher than 94% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)7.1%top 5.7% 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 Stack allows an authorized attacker to elevate privileges locally.
Affected products (as reported)
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 Process Activation Elevation of Privilege Vulnerability vendor-advisory, patch
- https://www.vicarius.io/vsociety/posts/cve-2025-21204-privilege-elevation-vulnerability-in-microsoft-windows-update-stack-mitigation-script
- https://www.vicarius.io/vsociety/posts/cve-2025-21204-privilege-elevation-vulnerability-in-microsoft-windows-update-stack-detection-script