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.
The remote host allows remote users to query its version number.
It is possible to determine that the remote BIND server is running BIND 9.x, even if its version number has been hidden, by querying it for the AUTHORS map.
It is recommended you change the source code to prevent attackers from fingerprinting your server.