#VU103821 Link following in Windows Server and Windows - CVE-2025-21420
Published: February 11, 2025 / Updated: June 13, 2025
Vulnerability identifier: #VU103821
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2025-21420
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vulnerable software:
Windows Server
Windows
Windows Server
Windows
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to insecure link following in Windows Disk Cleanup Tool. A local user can gain elevated privileges on the target system.
Remediation
Install updates from vendor's website.