Description
Windows Disk Cleanup Tool Elevation of Privilege Vulnerability
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 10 Version 1507 | 10.0.10240.0 – < 10.0.10240.20915 | 10.0.10240.20915 |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – < 10.0.14393.7785 | 10.0.14393.7785 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – < 10.0.17763.6893 | 10.0.17763.6893 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – < 10.0.19044.5487 | 10.0.19044.5487 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – < 10.0.19045.5487 | 10.0.19045.5487 |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – < 10.0.22621.4890 | 10.0.22621.4890 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 – < 10.0.22631.4890 | 10.0.22631.4890 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – < 10.0.22631.4890 | 10.0.22631.4890 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – < 10.0.26100.3194 | 10.0.26100.3194 |
| Microsoft | Windows Server 2012 | 6.2.9200.0 – < 6.2.9200.25317 | 6.2.9200.25317 |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 – < 6.2.9200.25317 | 6.2.9200.25317 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 – < 6.3.9600.22417 | 6.3.9600.22417 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 – < 6.3.9600.22417 | 6.3.9600.22417 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – < 10.0.14393.7785 | 10.0.14393.7785 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – < 10.0.14393.7785 | 10.0.14393.7785 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – < 10.0.17763.6893 | 10.0.17763.6893 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – < 10.0.17763.6893 | 10.0.17763.6893 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – < 10.0.20348.3207 | 10.0.20348.3207 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – < 10.0.25398.1425 | 10.0.25398.1425 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.3194 | 10.0.26100.3194 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.3194 | 10.0.26100.3194 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 3 repositories
-
moiz-2x/CVE-2025-21420_POC ★ 57 · Jun 12, 2025
Proof of Concept CVE-2025-21420 (Windows Disk Cleanup Tool EoP)
-
toxy4ny/edge-maradeur ★ 7 · Feb 20, 2025
Exploiting a vulnerability in Windows Disk Cleanup to elevate privileges and provide access to protected data in Edge by bypassing the security feature. CVE-2025-21420 and CVE-2025-21401.
-
Dmitri131313/CVE-2025-21420-PoC ★ 1 · Feb 17, 2025
We found a way to DLL sideload with cleanmgr.exe
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- WID-SEC-2025-0331 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 29, 2025
- NCSC-2025-0047 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Feb 11, 2025
- MSRC-CVE-2025-21420 Windows Disk Cleanup Tool Elevation of Privilege Vulnerability Microsoft Security Response Center · Feb 11, 2025
References
- Windows Disk Cleanup Tool Elevation of Privilege Vulnerability vendor-advisory patch