CVE-2023-21674: Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
First published: Tue Jan 10 2023(Updated: )
Microsoft Windows Advanced Local Procedure Call (ALPC) contains an unspecified vulnerability that allows for privilege escalation.
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows RT | ||
| Microsoft Windows 8.1 | ||
| Microsoft Windows 8.1 | ||
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2019 | ||
| Windows 11 | =22H2 | |
| Windows 11 | =22H2 | |
| Windows 11 | =21H2 | |
| Windows 11 | =21H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Windows 11 | ||
| Windows 11 | ||
| Windows 11 | ||
| Windows 11 | ||
| Microsoft Windows Server | =r2 | |
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2016 | ||
| Microsoft Windows 10 | <10.0.10240.19685 | |
| Microsoft Windows 10 | <10.0.14393.5648 | |
| Microsoft Windows 10 | <10.0.17763.3887 | |
| Microsoft Windows 10 | <10.0.19042.2486 | |
| Microsoft Windows 10 | <10.0.19044.2486 | |
| Microsoft Windows 10 | <10.0.19045.2486 | |
| Windows 11 | <10.0.22000.1455 | |
| Windows 11 | <10.0.22621.1105 | |
| Microsoft Windows RT | ||
| Microsoft Windows Server 2016 | <10.0.14393.5648 | |
| Microsoft Windows Server 2019 | <10.0.17763.3887 | |
| Microsoft Windows Server 2022 | <10.0.20348.1487 | |
| Windows 10 | =20H2 | |
| Windows 10 | =20H2 | |
| Windows 10 | =20H2 | |
| Windows 10 | =1809 | |
| Windows 10 | =1809 | |
| Windows 10 | =1809 | |
| Windows 10 | =22H2 | |
| Windows 10 | =22H2 | |
| Windows 10 | =22H2 | |
| Windows 10 | =1607 | |
| Windows 10 | =1607 | |
| Windows 10 | =21H2 | |
| Windows 10 | =21H2 | |
| Windows 10 | =21H2 | |
| Windows 10 | ||
| Windows 10 | ||
| Microsoft Windows Operating System |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2023-21674?
CVE-2023-21674 has been classified as a privilege escalation vulnerability in Microsoft Windows ALPC.
How do I fix CVE-2023-21674?
Fix CVE-2023-21674 by applying the appropriate patches provided by Microsoft for your version of Windows.
Which versions of Windows are affected by CVE-2023-21674?
CVE-2023-21674 affects multiple versions of Windows, including Windows 10, Windows 11, and Windows Server editions.
Can CVE-2023-21674 be exploited remotely?
CVE-2023-21674 requires local access to the system for exploitation, thus making it less likely to be exploited remotely.
What type of attack does CVE-2023-21674 involve?
CVE-2023-21674 involves an elevation of privilege vulnerability, which allows attackers to execute code with elevated permissions.
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