Again the list of CVEs is just informational data. It has nothing to do with the availability of vulnerability tests. It contains CVE information which aren’t detected by our software for various reasons.
If a vulnerability is detected depends on the availability of a vulnerability test (VT or NVT) which can be found at SecInfo → NVTs in the web UI. If a vulnerability is found by a VT it often contains one or more references to a CVE ID. So the reported vulnerability detected by a VT can be enriched with the available CVE information. It’s similar as like adding a URL link to the CVEs at https://cve.mitre.org/.
The amount of CVE information is the same for the open source Greenbone Community Edition and the commercial Greenbone Enterprise Edition. Both come with exactly the same CVE list. They just differ in the amount of vulnerability tests.