CVE-2025-27491: Windows Hyper-V Remote Code Execution Vulnerability
First published: Tue Apr 08 2025(Updated: )
<p>Use after free in Windows Hyper-V allows an authorized attacker to execute code over a network.</p>
Credit: secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Windows 10 | =21H2 | |
| Microsoft Windows Server 2025 | ||
| Windows 10 | =22H2 | |
| Windows 10 | =22H2 | |
| Windows 10 | =22H2 | |
| Windows 11 | =24H2 | |
| Windows 10 | =1607 | |
| Windows 10 | =1809 | |
| Windows 11 | =24H2 | |
| Windows 10 | =1809 | |
| Microsoft Windows Server 2019 | ||
| Windows 10 | =21H2 | |
| Windows 11 | =23H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2016 | ||
| Windows 10 | =1607 | |
| Windows 11 | =23H2 | |
| Microsoft Windows Server 2019 | ||
| Windows 11 | =22H2 | |
| Windows 11 | =22H2 | |
| Microsoft Windows Server 2025 | ||
| Microsoft Windows Server 2022 23H2 | ||
| Windows 10 | =21H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2016 | ||
| Windows 10 | ||
| Windows 10 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-27491?
CVE-2025-27491 is classified as a Remote Code Execution vulnerability in Windows Hyper-V.
How do I fix CVE-2025-27491?
To fix CVE-2025-27491, apply the relevant patches provided by Microsoft for your specific Windows version.
Which Windows products are affected by CVE-2025-27491?
CVE-2025-27491 affects multiple versions of Windows 10, Windows 11, and Windows Server 2025.
Can CVE-2025-27491 be exploited remotely?
Yes, CVE-2025-27491 can be exploited by an authorized attacker over the network.
What is the impact of exploiting CVE-2025-27491?
Exploiting CVE-2025-27491 could allow an attacker to execute arbitrary code on the affected system.
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