Feb 2024: Windows Kernel Elevation of Privilege Vulnerability
CVE-2024-21338 Published on February 13, 2024

Windows Kernel Elevation of Privilege Vulnerability
Windows Kernel Elevation of Privilege Vulnerability

Vendor Advisory NVD

Known Exploited Vulnerability

This Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Microsoft Windows Kernel contains an exposed IOCTL with insufficient access control vulnerability within the IOCTL (input and output control) dispatcher in appid.sys that allows a local attacker to achieve privilege escalation.

The following remediation steps are recommended / required by March 25, 2024: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Weakness Type

Untrusted Pointer Dereference

The program obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.

Products Associated with CVE-2024-21338

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Microsoft Windows 11 23h2

Microsoft Windows 10

Microsoft Windows 11

Microsoft Windows Server 2022

Microsoft Windows Server 2019

Microsoft Windows Server 2022 23h2

Microsoft Windows Server 23h2

Affected Versions

Microsoft Windows 10 Version 1809:

Version 10.0.17763.0 and below 10.0.17763.5458 is affected.

Microsoft Windows 10 Version 1809:

Version 10.0.0 and below 10.0.17763.5458 is affected.

Microsoft Windows Server 2019:

Version 10.0.17763.0 and below 10.0.17763.5458 is affected.

Microsoft Windows Server 2019 (Server Core installation):

Version 10.0.17763.0 and below 10.0.17763.5458 is affected.

Microsoft Windows Server 2022:

Version 10.0.20348.0 and below 10.0.20348.2322 is affected.

Microsoft Windows 11 version 21H2:

Version 10.0.0 and below 10.0.22000.2777 is affected.

Microsoft Windows 10 Version 21H2:

Version 10.0.19043.0 and below 10.0.19044.4046 is affected.

Microsoft Windows 11 version 22H2:

Version 10.0.22621.0 and below 10.0.22621.3155 is affected.

Microsoft Windows 10 Version 22H2:

Version 10.0.19045.0 and below 10.0.19045.4046 is affected.

Microsoft Windows 11 version 22H3:

Version 10.0.22631.0 and below 10.0.22631.3155 is affected.

Microsoft Windows 11 Version 23H2:

Version 10.0.22631.0 and below 10.0.22631.3155 is affected.

Microsoft Windows Server 2022, 23H2 Edition (Server Core installation):

Version 10.0.25398.0 and below 10.0.25398.709 is affected.

Exploit Probability

EPSS

78.60%

Percentile

99.03%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.