CVE-2025-21420

Windows Disk Cleanup Tool Elevation of Privilege Vulnerability

Windows Disk Cleanup Tool Elevation of Privilege Vulnerability

Affected

Microsoft · Windows 10 Version 1507 · Windows 10 Version 1607 · Windows 10 Version 1809 · Windows 10 Version 21H2 · Windows 10 Version 22H2 · Windows 11 version 22H2

CVSS v3.1 MICROSOFT

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

3.70% chance of exploitation in the next 30 days, 90th percentile

Published

2025-02-11

Updated

2026-02-13

Proof-of-concept exploits (2)

• moiz-2x/CVE-2025-21420_POC55★ · 2025-06-12
• Dmitri131313/CVE-2025-21420-PoC1★ · 2025-02-17

Security advisories

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21420

References

• CVE Record
• NVD entry

Related

• CVE-2025-24990
• CVE-2012-1823
• CVE-2021-2291