Microsoft has fixed 44 vulnerabilities (51 including Microsoft Edge) with today’s update, with seven classified as Critical and 37 as Important. Of the 44 vulnerabilities, 13 are remote code execution, eight are information disclosure, two are denial of service, and four are spoofing vulnerabilities. One of the security updates fixes the PrintNightmare vulnerabilities that allow threat actors to gain SYSTEM level privileges simply by connecting to a remote print server under their control. Microsoft also fixed the PetitPotam NTLM relay attack vector that uses the MS-EFSRPC API.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-august-2021-patch-tuesday-fixes-3-zero-days-44-flaws/