Inside operational systems (OT), industrial devices communicating over IP could use a wide range of field-specific, manufacturer-dependent or association-promoted industrial network protocols. To understand each other, they sometimes require an additional component as a gateway to make the translation between protocols. These nearly invisible devices play a crucial role in the industrial process: if the translation stops, the communication stops and possibly operations as well. From an attacker's perspective, this means that targeting them may have significant consequences. With this in mind, I assessed the security of a gateway model I often encounter during penetration tests on OT and I discovered several vulnerabilities that have been reported to the manufacturer. Months later, I would like to discuss the many concerns raised by the vulnerabilities themselves and the disclosure process. This tells us a lot about the current situation, issues and threats faced by such gateways, how they are and can be addressed, and what it means for OT cybersecurity.