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.
An e-mail client was detected on the remote host.
The remote host is running the Mozilla Thunderbird e-mail client.
Ensure the email client is up to date on security updates and in accordance to company policy.