Upgrade from 2.0.3

I have a couple of VPS still running 2.0.3. There were some Cyberpanel upgrade issues a couple years back so I held off on these two. Should running the current upgrade to the current version from this version be safe? recommended? anyone else done the update from this version to current? Any input would be appreciated. BTW - machine is running CentOS Linux release 7.8.2003. Thank you

Yes there is some serious security issues on old version.

I understand that - I am hoping to NOT break the box during the upgrade - Should running the current upgrade to the current version from such an old version be safe and not break the current box?

Take snapshot before upgrade so if something go wrong which is unlikely you can always rollback.