Microsoft published the September 2017 Patch Tuesday, and this month the OS maker fixed 82 security bugs. Among the patches, there is one zero-day vulnerability exploited in the wild and three bugs whose details became public but have yet to be exploited in attacks. Details about three other flaws became public, but no attacker has used this information to attack Windows users. Microsoft said it silently patched this flaw in July, but only now released details about it to allow other software vendors to patch their products as well.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-september-patch-tuesday-fixes-82-security-issues-including-a-zero-day/