CVE-2024-21338: Windows Kernel Elevation of Privilege Vulnerability

Overview

Severity
High (CVSS 7.8)
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
Category
Elevation of Privilege
Exploit Status
Actively Exploited
Exploitation Likelihood
Detected
Patch Tuesday
2024-Feb
Released
2024-02-13
Last Updated
2024-02-28
EPSS Score
79.14% (percentile: 99.1%)
CISA KEV
Listed — due 2024-03-25

FAQ

What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges. How could an attacker exploit this vulnerability? To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system.

Known Exploits (6)

  • Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability — added 2025-01-12T06:16:30Z
  • Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability — added 2024-07-29T13:18:06Z
  • Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability — added 2024-06-23T06:03:44Z
  • Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability — added 2024-04-23T19:09:22Z
  • Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability — added 2024-04-17T10:16:21Z
  • Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability — added 2024-04-13T05:53:02Z

Detection & Weaponization (1 sources)

Maturity: Exploit

  • GitHub PoC: 8 repositories

Affected Products (20)

Windows

  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 1809 for ARM64-based Systems
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server 2022
  • Windows Server 2022 (Server Core installation)
  • Windows 11 version 21H2 for x64-based Systems
  • Windows 11 version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for 32-bit Systems
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows 11 Version 22H2 for ARM64-based Systems
  • Windows 11 Version 22H2 for x64-based Systems
  • Windows 10 Version 22H2 for x64-based Systems
  • Windows 10 Version 22H2 for ARM64-based Systems
  • Windows 10 Version 22H2 for 32-bit Systems
  • Windows 11 Version 23H2 for ARM64-based Systems
  • Windows 11 Version 23H2 for x64-based Systems
  • Windows Server 2022, 23H2 Edition (Server Core installation)

Security Updates (6)

Acknowledgments

Jan Vojtěšek with Avast

Revision History

  • 2024-02-13: Information published.
  • 2024-02-15: Updated one or more CVSS scores for the affected products. This is an informational change only.
  • 2024-02-28: Updated the Exploitability Index to 0 - Exploitation Detected and Exploited to Yes. This is an informational change only.