KLA12041
Multiple vulnerabilities in Microsoft Products (ESU)

Multiple vulnerabilities were found in Microsoft Products (Extended Support Update). Malicious users can exploit these vulnerabilities to execute arbitrary code, obtain sensitive information, gain privileges, bypass security restrictions, cause denial of service.

Below is a complete list of vulnerabilities:

1. A remote code execution vulnerability in Remote Procedure Call Runtime can be exploited remotely to execute arbitrary code.
2. An information disclosure vulnerability in Windows GDI+ can be exploited remotely to obtain sensitive information.
3. An elevation of privilege vulnerability in Windows Hyper-V can be exploited remotely to gain privileges.
4. An elevation of privilege vulnerability in Windows CSC Service can be exploited remotely to gain privileges.
5. An elevation of privilege vulnerability in Windows Update Stack can be exploited remotely to gain privileges.
6. An elevation of privilege vulnerability in Windows Remote Procedure Call Runtime can be exploited remotely to gain privileges.
7. An information disclosure vulnerability in Windows Graphics Component can be exploited remotely to obtain sensitive information.
8. A remote code execution vulnerability in Microsoft DTV-DVD Video Decoder can be exploited remotely to execute arbitrary code.
9. A remote code execution vulnerability in Windows Fax Compose Form can be exploited remotely to execute arbitrary code.
10. An elevation of privilege vulnerability in Windows LUAFV can be exploited remotely to gain privileges.
11. A security feature bypass vulnerability in NTLM can be exploited remotely to bypass security restrictions.
12. An information disclosure vulnerability in TPM Device Driver can be exploited remotely to obtain sensitive information.
13. An elevation of privilege vulnerability in Active Template Library can be exploited remotely to gain privileges.
14. An elevation of privilege vulnerability in Windows Print Spooler can be exploited remotely to gain privileges.
15. A security feature bypass vulnerability in Windows Remote Desktop Protocol Core can be exploited remotely to bypass security restrictions.
16. A denial of service vulnerability in Windows CryptoAPI can be exploited remotely to cause denial of service.
17. An elevation of privilege vulnerability in Windows Installer can be exploited remotely to gain privileges.
18. An elevation of privilege vulnerability in Windows Win32k can be exploited remotely to gain privileges.
19. An information disclosure vulnerability in Windows (modem.sys) can be exploited remotely to obtain sensitive information.
20. An information disclosure vulnerability in Windows NT Lan Manager Datagram Receiver Driver can be exploited remotely to obtain sensitive information.
21. A remote code execution vulnerability in GDI+ can be exploited remotely to execute arbitrary code.

The following public exploits exists for this vulnerability:

https://github.com/waleedassar/CVE-2021-1699

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Windows 10 Version 1909 for ARM64-based Systems
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows Server 2012
Windows 10 Version 1809 for x64-based Systems
Windows Server 2008 for x64-based Systems Service Pack 2
Windows 10 Version 20H2 for ARM64-based Systems
Windows Server, version 2004 (Server Core installation)
Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 1803 for 32-bit Systems
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows 10 Version 1909 for 32-bit Systems
Windows Server, version 20H2 (Server Core Installation)
Windows 10 Version 1803 for x64-based Systems
Windows 10 Version 2004 for 32-bit Systems
Windows 10 Version 2004 for ARM64-based Systems
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2019
Windows RT 8.1
Windows 10 Version 2004 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server, version 1909 (Server Core installation)
Windows Server 2016
Windows 10 Version 1809 for 32-bit Systems
Windows 8.1 for x64-based systems
Windows Server 2012 R2 (Server Core installation)
Windows 10 Version 1809 for ARM64-based Systems
Windows 10 Version 1803 for ARM64-based Systems
Windows Server 2016 (Server Core installation)
Windows Server 2012 R2
Windows 10 Version 1607 for x64-based Systems
Windows 7 for 32-bit Systems Service Pack 1
Windows 10 Version 20H2 for 32-bit Systems
Windows 10 for 32-bit Systems
Windows 10 Version 20H2 for x64-based Systems
Windows Server 2012 (Server Core installation)
Windows 10 for x64-based Systems
Windows Server 2019 (Server Core installation)
Windows 8.1 for 32-bit systems
Windows 10 Version 1909 for x64-based Systems

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)

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