Microsoft has issued an advisory for another zero-day Windows print spooler vulnerability tracked as CVE-2021-36958. This vulnerability is part of a class of bugs known as ‘PrintNightmare,’ which abuses configuration settings for the Windows Print Spooler, print drivers, and the Windows Point and Print feature. Microsoft released security updates in both July and August to fix various PrintNightmare vulnerabilities. However, a vulnerability disclosed by security researcher Benjamin Delpy still allows threat actors to quickly gain SYSTEM privileges simply by connecting to a remote print server.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-confirms-another-windows-print-spooler-zero-day-bug/