These updates will automatically be delivered to your machines via Windows Update. For a complete listing of the issues, check out the following Microsoft Knowledge Base articles. 

Security Update for Internet Explorer

https://technet.microsoft.com/library/security/MS15-065

Vulnerability in Windows Installer Service Could Allow Elevation of Privilege

https://technet.microsoft.com/en-us/library/security/ms15-074.aspx

Vulnerabilities in OLE Could Allow Elevation of Privilege

https://technet.microsoft.com/library/security/MS15-075

Vulnerability in Windows Remote Procedure Call Could Allow Elevation of Privilege

https://technet.microsoft.com/en-us/library/security/ms15-076.aspx