https://www.bleepingcomputer.com/news/microsoft/microsoft-fixes-remaining-windows-printnightmare-vulnerabilities/

Microsoft has released a security update to fix the last remaining PrintNightmare zero-day vulnerabilities that allowed attackers to gain administrative privileges on Windows devices quickly.

In June, a zero-day Windows print spooler vulnerability dubbed PrintNightmare (CVE-2021-34527) was accidentally disclosed. This vulnerability exploits the Windows Point and Print feature to perform remote code execution and gain local SYSTEM privileges.