Closed CVEs

Hello,
I scanned a target and Greenbone find below CVEs:


Are these serious?

Thank you.

You can find the meaning / description of the “Closed CVEs” in the documentation which should help to understand / interpret this tab:

Closed CVEs
CVEs of originally detected vulnerabilities which were already confirmed as solved during the scan.
https://docs.greenbone.net/GSM-Manual/gos-20.08/en/reports.html#reading-a-report