Below are the security fixes for the SharePoint OnPrem versions released this month.
SharePoint Foundation security fixes also have to be applied on SharePoint Server installations.
SharePoint Server security fixes also have to be applied on Project Server installations.
SharePoint 2013 Suite:
SharePoint 2016 Suite:
- KB 5001917 – SharePoint Server 2016 (language independent)
SharePoint 2019 Suite:
- KB 5001916 – SharePoint Server 2019 (language independent)
Office Online Server:
- KB 5001914 – Office Online Server