Microsoft has released 3 advisories and updates for 79 vulnerabilities, with 19 being classified as Critical. These updates include fixes for one actively exploited vulnerability discovered by Palo Alto Networks and a publicly disclosed vulnerability in Skype for Android. Remote Desktop Fix released for Remote Desktop Services on Windows XP, Windows Server 2003, Windows 7, and Windows Server 2008 R2. Microsoft also released an update for Windows XP and Windows 2003, which are no longer supported, which could be exploited by a Worm malware to spread through exposed computers.
Source: https://www.bleepingcomputer.com/news/microsoft/microsofts-may-2019-patch-tuesday-fixes-79-vulnerabilities/