Hi,
you can always find the latest available version of the Greenbone Community Edition at the following link (linked in About the Greenbone Professional Edition category):
https://www.greenbone.net/en/testnow (See the “Download Now” text/link).
There you can see two things:
- The GCE is currently at 4.2.20 which is matching your downloaded version.
- If a new version of the GCE is published you need to download and install from a fresh .iso as shown in the “The Features of GSM and GCE are tailored to the environment” table:
| GSM (professional environments) | GCE (SOHO environments) | |
|---|---|---|
| System Update | Contains Security Updates, can update from any version to latest release, Grace Periods for EoL and LTS, Migration of data and configurations between appliances and versions | Not available |