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CVE-2024-43631: Windows Secure Kernel Mode Elevation of Privilege Vulnerability

CVE-2024-43631 · published 1 year ago

Summary

A security weakness in Windows Secure Kernel mode could allow an attacker to gain unauthorized access to sensitive system settings. This could potentially lead to malicious activities such as data theft or system compromise. Users should update their Windows systems to the latest security patches as soon as possible to mitigate this risk.

What to do

Update microsoft windows_10_21h2 to version 10.0.19044.5131 or later.
Update microsoft windows_10_22h2 to version 10.0.19045.5131 or later.
Update microsoft windows_11_22h2 to version 10.0.22621.4460 or later.
Update microsoft windows_11_23h2 to version 10.0.22631.4460 or later.
Update microsoft windows_11_24h2 to version 10.0.26100.2314 or later.
Update microsoft windows_server_2022 to version 10.0.20348.2849 or later.
Update microsoft windows_server_2022_23h2 to version 10.0.25398.1251 or later.
Update microsoft windows_server_2025 to version 10.0.26100.2314 or later.

Affected software

Vendor	Product	Affected versions
microsoft	windows_10_21h2	< 10.0.19044.5131 `cpe:2.3:o:microsoft:windows_10_21h2:::::::arm64:*`
microsoft	windows_10_22h2	< 10.0.19045.5131 `cpe:2.3:o:microsoft:windows_10_22h2:::::::arm64:*`
microsoft	windows_11_22h2	< 10.0.22621.4460 `cpe:2.3:o:microsoft:windows_11_22h2:::::::arm64:*`
microsoft	windows_11_23h2	< 10.0.22631.4460 `cpe:2.3:o:microsoft:windows_11_23h2:::::::arm64:*`
microsoft	windows_11_24h2	< 10.0.26100.2314 `cpe:2.3:o:microsoft:windows_11_24h2:::::::arm64:*`
microsoft	windows_server_2022	< 10.0.20348.2849 `cpe:2.3:o:microsoft:windows_server_2022::::::::`
microsoft	windows_server_2022_23h2	< 10.0.25398.1251 `cpe:2.3:o:microsoft:windows_server_2022_23h2::::::::`
microsoft	windows_server_2025	< 10.0.26100.2314 `cpe:2.3:o:microsoft:windows_server_2025::::::::`

Original advisory text

Windows Secure Kernel Mode Elevation of Privilege Vulnerability

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43631 Patch Vendor Advisory

Fix within

Internet-facing 14 days

Internal At next upgrade

Not known to be exploited
Needs hands-on effort to exploit
Gives an attacker full control

Severity

7.8 High

Exploitation

<1% chance of attack within 30 days

Type

CWE-822Untrusted Pointer Dereference

Timeline

Published12 Nov 2024

Updated4 Nov 2026

First seen7 Mar 2026

Sources

CVE-2024-43631 · NVD

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