get the last recent update for a package

Hello there;
hope find a response here, I feel lost
we are using red hat enterprise linux (6.x)
the servers are offline, not connected to the internet
I'm looking a way to get the last recent update for an application ( like openssh, apache,...) for my servers , patched the known security vulnerabilities
how can I get them (with deendencies needed to update )
can I use errata data

regards