CVE-2025-21420
Published: 11 February 2025
Description
Windows Disk Cleanup Tool Elevation of Privilege Vulnerability
Security Summary
CVE-2025-21420 is an elevation of privilege vulnerability in the Windows Disk Cleanup Tool. It stems from improper link resolution before file access, classified under CWE-59. The vulnerability affects Windows systems and has a CVSS v3.1 base score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high impact on confidentiality, integrity, and availability when exploited.
A local attacker with low-privilege access can exploit this vulnerability without user interaction. Successful exploitation allows the attacker to elevate privileges, potentially gaining full system control by modifying critical files or executing arbitrary code with elevated rights.
The Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21420 provides details on patching, recommending that affected systems apply the available security update to mitigate the issue.
Details
- CWE(s)