A read-only administrator on Fortinet devices with FortiOS 5.2.x before 5.2.10 GA and 5.4.x before 5.4.2 GA may have access to read-write administrators password hashes (not including super-admins) stored on the appliance via the webui REST API, and may therefore be able to crack them.
http://www.securitytracker.com/id/1037394