CVE-2024-43584: Windows Scripting Engine Security Feature Bypass Vulnerability

Overview

Severity

High (CVSS 7.7)

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C

Category

Security Feature Bypass

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2024-Oct

Released

2024-10-08

EPSS Score

0.79% (percentile: 73.9%)

FAQ

What kind of security feature could be bypassed by successfully exploiting this vulnerability? The Anti-Malware Scanning Interface implementation in the newer jscript9legacy.dll is not enabled when running in cscript/wscript leading to a bypass.

Affected Products (11)

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 11 Version 22H2 for ARM64-based Systems
• Windows 11 Version 22H2 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)
• Windows 11 Version 24H2 for ARM64-based Systems
• Windows 11 Version 24H2 for x64-based Systems

Security Updates (5)

• 5044281
• 5044280
• 5044285
• 5044288
• 5044284

Acknowledgments

Marius Negrutiu with AVIRA, Garrett Moore with CrowdStrike

Revision History

• 2024-10-08: Information published.