Extended support ends July 22. https://docs.microsoft.com/en-us/lifecycle/products/microsoft-sql-server-2012
Time to start planning your SQL Server 2017 and 2019 migrations, or to move to Azure, or to consider Extended Security updates.
Also consider migrating your erp or finance systems to the cloud or the latest on-premise release.
If your SQL server is an older version, then it is likely that you are also on an older versions of Windows server e.g. Windows 12 which is also nearing end of life and the options are similar to SQL 2012.
To discuss options call Synergy Software Systems 009714 3365589