CVE-2024-26184: Secure Boot Security Feature Bypass Vulnerability

Overview

Severity
Medium (CVSS 6.8)
CVSS Vector
CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Category
Security Feature Bypass
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2024-Jul
Released
2024-07-09
EPSS Score
1.19% (percentile: 78.9%)

FAQ

According to the CVSS metric, the attack vector is adjacent (AV:A). What does that mean for this vulnerability? An authenticated attacker could exploit this vulnerability with LAN access. According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to gather information specific to the environment and take additional actions prior to exploitation to prepare the target environment. How could an attacker successfully exploit this vulnerability? To exploit the vulnerability, an attacker who has physical access or Administrative rights to a target device could install a malicious .bcd file. What kind of security feature could be bypassed by successfully exploiting this vulnerability? An attacker who successfully exploited this vulnerability could bypass Secure Boot. According to the CVSS metric, user interaction is required (UI:R) and privileges required are none (PR:N). What does that mean for this vulnerability? An unauthorized attacker must wait for a user to initiate a connection.

Affected Products (15)

Windows

  • 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 23H2 for ARM64-based Systems
  • Windows 11 Version 23H2 for x64-based Systems
  • Windows Server 2022, 23H2 Edition (Server Core installation)

ESU

  • 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

Security Updates (5)

Acknowledgments

<a href="https://twitter.com/4zure9">Azure Yang</a> with <a href="http://www.cyberkl.com/">Kunlun Lab</a>

Revision History

  • 2024-07-09: Information published.