CVE-2025-29824: Microsoft Windows Common Log File System (CLFS) Driver Use-After-Free Vulnerability
First published: Tue Apr 08 2025(Updated: )
<p>Use after free in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.</p>
Credit: secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Windows 10 | =21H2 | |
| Windows 11 | =23H2 | |
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server | ||
| Windows 10 | =1607 | |
| Windows 10 | =1809 | |
| Windows 10 | =1607 | |
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server 2008 R2 | ||
| Windows 11 | =24H2 | |
| Microsoft Windows Server 2022 23H2 | ||
| Microsoft Windows Server 2019 | ||
| Windows 10 | =22H2 | |
| Windows 10 | =1809 | |
| Microsoft Windows Server | ||
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2025 | ||
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2008 R2 | ||
| Windows 11 | =23H2 | |
| Windows 10 | =22H2 | |
| Microsoft Windows Server | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2025 | ||
| Windows 10 | =21H2 | |
| Windows 10 | =22H2 | |
| Microsoft Windows Server 2016 | ||
| Windows 10 | =21H2 | |
| Windows 11 | =24H2 | |
| Windows 11 | =22H2 | |
| Windows 11 | =22H2 | |
| Microsoft Windows Operating System | ||
| Microsoft Windows 10 | <10.0.14393.7970 | |
| Microsoft Windows 10 | <10.0.14393.7970 | |
| Microsoft Windows 10 | <10.0.17763.7137 | |
| Microsoft Windows 10 | <10.0.17763.7137 | |
| Microsoft Windows 10 | <10.0.19044.5737 | |
| Microsoft Windows 10 | <10.0.19044.5737 | |
| Microsoft Windows 10 | <10.0.19044.5737 | |
| Microsoft Windows 10 | <10.0.19045.5737 | |
| Microsoft Windows 10 | <10.0.19045.5737 | |
| Microsoft Windows 10 | <10.0.19045.5737 | |
| Windows 11 | <10.0.22621.5191 | |
| Windows 11 | <10.0.22621.5191 | |
| Windows 11 | <10.0.22631.5191 | |
| Windows 11 | <10.0.26100.3775 | |
| Windows 11 | <10.0.26100.3775 | |
| Microsoft Windows Server | <6.0.6003.23220 | |
| Microsoft Windows Server | <6.0.6003.23220 | |
| Microsoft Windows Server | <6.0.6003.23220 | |
| Microsoft Windows Server | <6.2.9200.25423 | |
| Microsoft Windows Server | =r2 | |
| Microsoft Windows Server 2016 | <10.0.14393.7970 | |
| Microsoft Windows Server 2019 | <10.0.17763.7137 | |
| Microsoft Windows Server 2022 | <10.0.20348.3454 | |
| Microsoft Windows Server 2022 | <10.0.25398.1551 | |
| Microsoft Windows Server 2025 | <10.0.26100.3775 | |
| Windows 10 | ||
| Windows 10 |
Remedy
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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Reference Links
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29824 (Advisory)
- https://www.bleepingcomputer.com/news/security/microsoft-windows-clfs-zero-day-exploited-by-ransomware-gang/
- https://www.theregister.com/2025/04/08/patch_tuesday_microsoft/
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-29824
- https://nvd.nist.gov/vuln/detail/CVE-2025-29824
- https://www.theregister.com/2025/04/09/microsoft_hello_patch/
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2025-29824?
CVE-2025-29824 is classified as a critical vulnerability due to its potential for privilege escalation.
How do I fix CVE-2025-29824?
To remediate CVE-2025-29824, users should apply the latest security patches provided by Microsoft for their specific Windows version.
Which Windows versions are affected by CVE-2025-29824?
CVE-2025-29824 affects various versions of Windows including Windows Server 2008, Windows 10, and Windows 11.
Can CVE-2025-29824 be exploited remotely?
No, CVE-2025-29824 requires local access for exploitation, limiting its threat to users with physical or authenticated access.
What are the risks of CVE-2025-29824 if left unpatched?
If left unpatched, CVE-2025-29824 can allow an authorized attacker to gain elevated privileges, potentially compromising system security.
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