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.
File Name: macosx_silverlight_installed.nasl
Family: MacOS X Local Security Checks
Asset Inventory: true
Required KB Items: Host/local_checks_enabled, Host/MacOSX/Version