CVE-2021-41339: Microsoft DWM Core Library Elevation of Privilege Vulnerability

Overview

Severity

Medium (CVSS 4.7)

CVSS Vector

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

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2021-Oct

Released

2021-10-12

EPSS Score

0.21% (percentile: 43.6%)

Affected Products (17)

Windows

• 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 2004 for 32-bit Systems
• Windows 10 Version 2004 for ARM64-based Systems
• Windows 10 Version 2004 for x64-based Systems
• Windows Server, version 2004 (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

Security Updates (4)

• 5006667
• 5006670
• 5006699
• 5006674

Acknowledgments

<a href="https://twitter.com/hillstone_lab">He YiSheng, Zhang WangJunJie, Li WenYue</a> with <a href="https://www.hillstonenet.com.cn/">Hillstone Security Technology Research Institute. 情報セキュリティ技術研究所</a>, <a href="https://twitter.com/hillstone_lab">He YiSheng, Zhang WangJunJie, Li WenYue</a> with <a href="https://www.hillstonenet.com.cn/">Hillstone Security Technology Research Institute. 情報セキュリティ技術研究所</a>, He YiSheng, Zhang WangJunJie, and Li WenYue of <a href="http://www.hillstonenet.com.cn/services/ips/">Hillstone Network Security Research Institute</a>

Revision History

• 2021-10-12: Information published.