CVE-2022-21975: Windows Hyper-V Denial of Service Vulnerability

Overview

Severity

Medium (CVSS 4.7)

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/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

2022-Mar

Released

2022-03-08

EPSS Score

0.14% (percentile: 33.4%)

FAQ

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 win a race condition.

Affected Products (16)

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 Server, version 20H2 (Server Core Installation)
• Windows 10 Version 21H2 for x64-based Systems
• Windows 10 for x64-based Systems
• Windows 10 Version 1607 for x64-based Systems
• Windows Server 2016
• Windows Server 2016 (Server Core installation)
• Windows 8.1 for x64-based systems

ESU

• Windows Server 2012 R2
• Windows Server 2012 R2 (Server Core installation)

Security Updates (8)

• 5011503
• 5011485
• 5011487
• 5011497
• 5011491
• 5011495
• 5011564
• 5011560

Acknowledgments

<a href="https://twitter.com/rezer0dai">rezer0dai</a> with Calories for GOOD

Revision History

• 2022-03-08: Information published.