It sounds like you’re asking for a formal report based on finding an index of /dcim directory exposed on a web server.
What this tells us:
Old content management systems (WordPress, Joomla, Drupal) sometimes have gallery plugins that create physical folders named dcim. When the website owner deletes the plugin but not the folder, or when they abandon the site entirely, that directory becomes a ghost in the machine, waiting to be crawled. index of dcim