CVE-2025-21420
Windows Disk Cleanup Tool Privilege Escalation
Description
Windows Disk Cleanup Tool Elevation of Privilege Vulnerability
INFO
Published Date :
Feb. 11, 2025, 6:15 p.m.
Last Modified :
Feb. 14, 2025, 5:36 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2025-21420 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2025-21420
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-21420.
| URL | Resource |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21420 | Patch Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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.
We found a way to DLL sideload with cleanmgr.exe
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-21420 vulnerability anywhere in the article.
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tripwire.com
Tripwire Patch Priority Index for February 2025
Tripwire's February 2025 Patch Priority Index (PPI) brings together important vulnerabilities for Microsoft.Up first on the list are patches for Microsoft Edge (Chromium-based) that resolve 4 remote c ... Read more
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Cybersecurity News
Microsoft’s Quantum Breakthrough: Majorana 1 and the Future of Computing
Microsoft has announced the launch of its first quantum processor, Majorana 1, which is built upon an entirely new architecture and is comparable in size to conventional desktop processors. This groun ... Read more
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Cyber Security News
Windows Disk Cleanup Tool Vulnerability Exploited to Gain SYSTEM Privileges
Microsoft has addressed a critical vulnerability in the Windows Disk Cleanup Tool (cleanmgr.exe) in the February 2025 Patch Tuesday security updates. Tracked as CVE-2025-21420, the vulnerability has a ... Read more
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Cyber Security News
Citrix NetScaler Vulnerability Allows Unauthorized Command Execution
Cloud Software Group issued urgent patches on February 18, 2025, for a high-severity vulnerability (CVE-2024-12284) affecting its NetScaler Console (formerly NetScaler ADM) and NetScaler Agent. Rated ... Read more
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Cybersecurity News
CVE-2025-21420: Windows Disk Cleanup Tool Flaw Exploited to Gain SYSTEM Privileges, PoC Released
A vulnerability in the Windows Disk Cleanup Tool (cleanmgr.exe) has been patched by Microsoft as part of its February 2025 Patch Tuesday. Tracked as CVE-2025-21420, the flaw could allow an attacker to ... Read more
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The Cyber Express
Microsoft Patch Tuesday for February Includes Two Zero Days Under Attack
Microsoft’s Patch Tuesday for February 2025 fixes four zero-day vulnerabilities, including two under active attack, plus another eight flaws judged to be at high risk of attack. In all, the Patch Tues ... Read more
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tripwire.com
VERT Threat Alert: February 2025 Patch Tuesday Analysis
Today’s VERT Alert addresses Microsoft’s February 2025 Security Updates. VERT is actively working on coverage for these vulnerabilities and expects to ship ASPL-1143 as soon as coverage is completed.I ... Read more
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BleepingComputer
Microsoft February 2025 Patch Tuesday fixes 4 zero-days, 55 flaws
Today is Microsoft's February 2025 Patch Tuesday, which includes security updates for 55 flaws, including four zero-day vulnerabilities, with two actively exploited in attacks. This Patch Tuesday also ... Read more
The following table lists the changes that have been made to the
CVE-2025-21420 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Feb. 14, 2025
Action Type Old Value New Value Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.10240.20915 *cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.10240.20915 *cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.14393.7785 *cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.14393.7785 *cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.17763.6893 *cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.17763.6893 *cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.19044.5487 *cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.19045.5487 *cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.22621.4890 *cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:* versions up to (including) 10.0.22631.4890 *cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.26100.3194 *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.14393.7785 *cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.17763.6893 *cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.20348.3207 *cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.25398.1425 *cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.26100.3194 Changed Reference Type https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21420 No Types Assigned https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21420 Patch, Vendor Advisory -
New CVE Received by [email protected]
Feb. 11, 2025
Action Type Old Value New Value Added Description Windows Disk Cleanup Tool Elevation of Privilege Vulnerability Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-59 Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21420
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-21420 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-21420
weaknesses.