According to my count, which is based on the official Security Update Guide, Microsoft’s patch pile for June addresses forty-nine security vulnerabilities.
There are approximately thirty-two updates, affecting .NET, Office, Windows (7, 8.1, and 10), SharePoint, and Visual Studio.
Only people paying through the nose for them will get the Windows 7 updates; the rest of us are out of luck. Windows 8.1 updates can be installed via the Windows Update control panel. Windows 10 systems will receive the updates when Microsoft feels like rebooting your computer, usally at the most inopportune time.