CVE-2025-26678: Windows Defender Application Control Security Feature Bypass Vulnerability
First published: Tue Apr 08 2025(Updated: )
<p>Improper access control in Windows Defender Application Control (WDAC) allows an unauthorized attacker to bypass a security feature locally.</p>
Credit: secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Windows 11 | =24H2 | |
| Microsoft Windows Server 2022 | ||
| Windows 10 | =1809 | |
| Windows 10 | =22H2 | |
| Windows 11 | =24H2 | |
| Windows 10 | =21H2 | |
| Microsoft Windows Server 2025 | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2025 | ||
| Windows 11 | =23H2 | |
| Microsoft Windows Server 2022 23H2 | ||
| Windows 11 | =23H2 | |
| Microsoft Windows Server 2019 | ||
| Windows 10 | =22H2 | |
| Windows 11 | =22H2 | |
| Windows 11 | =22H2 | |
| Windows 10 | =1809 | |
| Microsoft Windows Server 2019 | ||
| Windows 10 | =22H2 | |
| Windows 10 | =21H2 | |
| Windows 10 | =21H2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-26678?
CVE-2025-26678 has been rated with a high severity due to improper access control in Windows Defender Application Control.
How do I fix CVE-2025-26678?
To fix CVE-2025-26678, apply the relevant patches provided by Microsoft for your affected version of Windows.
Which versions of Windows are affected by CVE-2025-26678?
CVE-2025-26678 affects Windows 10, Windows 11, and Windows Server 2022 among other versions as specified in the official documentation.
Can CVE-2025-26678 be exploited locally?
Yes, CVE-2025-26678 can be exploited locally by an unauthorized attacker to bypass security features.
Are there any mitigations for CVE-2025-26678?
Currently, the best mitigation for CVE-2025-26678 is to apply the latest security updates from Microsoft.
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- canonical/windows 11
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- canonical/microsoft windows server 2019
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