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 browser is vulnerable to multiple flaws
The remote host is using the Mozilla web browser prior to version 1.7. There are several flaws within this version of Mozilla that include a remote overflow via a spoofed address bar, an overflow in the SSL certificate store, and other serious issues.