If your website is not using the WordPress framework then you are clear (at least from this vulnerability!).
If you do have a WordPress website then you need to compare the plugins and themes that you have installed (even if deactivated) with the list of affected plugins and themes that can be found here - https://ithemes.com/blog/wordpress-vulnerability-report-march-2-2022/#400-plugins-themes-impacted-by-insecure-freemius-version.
If you find a match and you're not on the version indicated as having a fix, then you have a problem! Either update the plugin, if available, or change to an alternative plugin not listed. If both these options are unavailable to you then make sure you have a security plugin in place and regular backups to try and limit the potential risk or damage from any attack, should it arrive!