CVE-2021-43246: Windows Hyper-V Denial of Service Vulnerability

Overview

Severity

Medium (CVSS 5.6)

CVSS Vector

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

Category

Denial of Service

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2021-Dec

Released

2021-12-14

EPSS Score

0.22% (percentile: 44.3%)

Affected Products (12)

Windows

• Windows 10 Version 1809 for x64-based Systems
• Windows Server 2019
• Windows Server 2019 (Server Core installation)
• Windows 10 Version 1909 for x64-based Systems
• Windows 10 Version 21H1 for x64-based Systems
• Windows Server 2022
• Windows Server 2022 (Server Core installation)
• Windows 10 Version 2004 for x64-based Systems
• Windows Server, version 2004 (Server Core installation)
• Windows Server, version 20H2 (Server Core Installation)
• Windows 11 version 21H2 for x64-based Systems
• Windows 10 Version 21H2 for x64-based Systems

Security Updates (5)

• 5008218
• 5008206
• 5008212
• 5008223
• 5008215

Acknowledgments

HongZhenhao of Ant Group Light-Year Security Lab

Revision History

• 2021-12-14: Information published.