CVE-2022-21881: Windows Kernel Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 7)

CVSS Vector

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

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

More Likely

Patch Tuesday

2022-Jan

Released

2022-01-11

EPSS Score

6.66% (percentile: 91.2%)

Detection & Weaponization (1 sources)

Maturity: Exploit

• GitHub PoC: 1 repositories

Affected Products (32)

Windows

• Windows 10 Version 1809 for 32-bit Systems
• Windows 10 Version 1809 for x64-based Systems
• Windows 10 Version 1809 for ARM64-based Systems
• Windows Server 2019
• Windows Server 2019 (Server Core installation)
• Windows 10 Version 1909 for 32-bit Systems
• Windows 10 Version 1909 for x64-based Systems
• Windows 10 Version 1909 for ARM64-based Systems
• Windows 10 Version 21H1 for x64-based Systems
• Windows 10 Version 21H1 for ARM64-based Systems
• Windows 10 Version 21H1 for 32-bit Systems
• Windows Server 2022
• Windows Server 2022 (Server Core installation)
• Windows 10 Version 20H2 for 32-bit Systems
• Windows 10 Version 20H2 for ARM64-based Systems
• Windows Server, version 20H2 (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 10 for 32-bit Systems
• Windows 10 for x64-based Systems
• Windows 10 Version 1607 for 32-bit Systems
• Windows 10 Version 1607 for x64-based Systems
• Windows Server 2016
• Windows Server 2016 (Server Core installation)
• Windows 8.1 for 32-bit systems
• Windows 8.1 for x64-based systems
• Windows RT 8.1

ESU

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

Security Updates (9)

• 5009557
• 5009545
• 5009543
• 5009555
• 5009566
• 5009585
• 5009546
• 5009624
• 5009595

Acknowledgments

HuanGMz@<a href="https://www.knownsec.com/">KnownSec 404 Team</a> , Kunlun lab (https://www.cyberkl.com) via TianfuCup (https://www.tianfucup.com) , <a href="https://www.zhihu.com/people/li-song-lin-44">sunglin</a>@<a href="https://www.knownsec.com/">KnownSec 404 Team</a>, <a href="https://twitter.com/dawuj4f">Tongqing Zhu</a>@<a href="https://www.knownsec.com/">KnownSec 404 Team</a>, <a href="https://nobb.site">Hcamael</a>@<a href="https://www.knownsec.com/">KnownSec 404 Team</a>, Zhiniang Peng <a href="https://twitter.com/edwardzpeng">@edwardzpeng</a> & Byzero with <a href="https://www.sangfor.com/en">Sangfor</a>

Revision History

• 2022-01-11: Information published.