The discontinued FFS Colibri product allows a remote user to access files on the system including files containing login credentials for other users.
https://www.franklinfueling.com/en/landing-pages/firmware/colibri-firmware/
https://www.franklinfueling.com/en/contact-us/
https://www.cisa.gov/news-events/ics-advisories/ICSA-23-331-02