http://www.newsweek.com/microsofts-printnightmare-just-latest-tech-security-issue-2021here-are-others-1607726

Microsoft is urging those who have a PC to update their computers immediately. A security breach under the name "PrintNightmare" can affect the Windows Spooler Print Service. Windows Spooler Print Service controls all the printing jobs that take place within the Windows operating system. When this process is interrupted, it can affect printer performance and reliability.

In lieu of the "PrintNightmare" security issues, Windows has created security updates for Windows Server 2019, Windows Server 2012 R2, Windows Server 2008, Windows 8.1, Windows RT 8.1, Windows 10, and Windows 7, which Microsoft halted support for in 2020.