The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
A DNS server is listening on the remote host over TLS.
The remote service is a Domain Name System (DNS) server, running over TLS, which provides a mapping between hostnames and IP addresses.
Disable this service if it is not needed or restrict access to internal hosts only if the service is available externally.