Siemens RUGGEDCOM ROX I (all versions) allow an authenticated user to bypass access restrictions in the web interface at port 10000/TCP to obtain privileged file system access or change configuration settings.
https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-327980.pdf
https://ics-cert.us-cert.gov/advisories/ICSA-17-087-01