CVE-2023-21771: Windows Local Session Manager (LSM) Elevation of Privilege Vulnerability
First published: Tue Jan 10 2023(Updated: )
Windows Local Session Manager (LSM) Elevation of Privilege Vulnerability
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows 10 | =20h2 | |
| Microsoft Windows 10 | =21h2 | |
| Microsoft Windows 10 | =22h2 | |
| Microsoft Windows 11 | =21h2 | |
| Microsoft Windows 11 | =21h2 | |
| Microsoft Windows 11 | =22h2 | |
| Microsoft Windows 11 | =22h2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows 10 | =20H2 | |
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows 10 | =20H2 | |
| Microsoft Windows 11 | =21H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows 10 | =20H2 | |
| Microsoft Windows 11 | =22H2 | |
| Microsoft Windows 11 | =21H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows 11 | =22H2 | |
| =20h2 | ||
| =21h2 | ||
| =22h2 | ||
| =21h2 | ||
| =21h2 | ||
| =22h2 | ||
| =22h2 | ||
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Reference Links
Frequently Asked Questions
What is CVE-2023-21771?
CVE-2023-21771 is a vulnerability in Windows Local Session Manager (LSM) that allows an attacker to elevate privileges.
Which versions of Windows are affected by CVE-2023-21771?
CVE-2023-21771 affects Windows 10 versions 20h2, 21h2, and 22h2, as well as Windows 11 versions 21h2 and 22h2.
What is the severity of CVE-2023-21771?
CVE-2023-21771 has a high severity rating with a CVSS score of 7.
How can I fix CVE-2023-21771?
To fix CVE-2023-21771, apply the relevant patches provided by Microsoft and follow the recommended remediation steps.
Where can I find more information about CVE-2023-21771?
You can find more information about CVE-2023-21771 on the Microsoft Security Response Center website.
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