CVE-2025-27478: Windows Local Security Authority (LSA) Elevation of Privilege Vulnerability
First published: Tue Apr 08 2025(Updated: )
<p>Heap-based buffer overflow in Windows Local Security Authority (LSA) 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 2025 | ||
| Microsoft Windows Server 2016 | ||
| Windows 10 | =22H2 | |
| Microsoft Windows Server | ||
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows Server 2019 | ||
| Windows 11 | =24H2 | |
| Windows 10 | =1607 | |
| Microsoft Windows Server | ||
| Windows 10 | =1809 | |
| Windows 10 | =22H2 | |
| Windows 10 | =22H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server 2012 R2 | ||
| Windows 11 | =24H2 | |
| Windows 11 | =22H2 | |
| Microsoft Windows Server 2025 | ||
| Windows 10 | =21H2 | |
| Windows 11 | =22H2 | |
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server | ||
| Windows 10 | =21H2 | |
| Microsoft Windows Server 2022 23H2 | ||
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows Server | ||
| Windows 11 | =23H2 | |
| Microsoft Windows Server 2019 | ||
| Windows 10 | =1809 | |
| Windows 11 | =23H2 | |
| Windows 10 | =21H2 | |
| Windows 10 | =1607 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server | ||
| Windows 10 | ||
| Windows 10 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-27478?
CVE-2025-27478 has a high severity level due to its ability to allow authorized attackers to elevate privileges locally.
How do I fix CVE-2025-27478?
To fix CVE-2025-27478, apply the appropriate security patches provided by Microsoft for the affected Windows versions.
Which versions of Windows are affected by CVE-2025-27478?
CVE-2025-27478 affects various Windows versions, including Windows 10, Windows 11, and different iterations of Windows Server, specifically 2008, 2012, 2016, 2019, 2022, and 2025.
What type of vulnerability is CVE-2025-27478?
CVE-2025-27478 is a heap-based buffer overflow vulnerability in the Windows Local Security Authority (LSA).
Can CVE-2025-27478 be exploited remotely?
No, CVE-2025-27478 requires local access for exploitation, which means an attacker must be physically present or have local account access.
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