CVE-2022-21995: Windows Hyper-V Remote Code Execution Vulnerability

Overview

Severity

High (CVSS 7.9)

CVSS Vector

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

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2022-Feb

Released

2022-02-08

EPSS Score

0.84% (percentile: 74.7%)

FAQ

According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? In this case, a successful attack could be performed from a low privilege Hyper-V guest. The attacker could traverse the guest's security boundary to execute code on the Hyper-V host execution environment. 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 prepare the target environment to improve exploit reliability.

Affected Products (14)

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 11 version 21H2 for x64-based Systems
• 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)

Security Updates (7)

• 5010351
• 5010345
• 5010342
• 5010354
• 5010386
• 5010358
• 5010359

Acknowledgments

<a href="https://twitter.com/rezer0dai">rezer0dai</a> with EatingFigs ENooPig

Revision History

• 2022-02-08: Information published.