CVE-2025-1727: End-Of-Train And Head-Of-Train Remote Linking Protocol

High severity, CVSS 8.1. EPSS: 0.6% chance of exploitation in the next 30 days.

The protocol used for remote linking over RF for End-of-Train and Head-of-Train (also known as a FRED) relies on a BCH checksum for packet creation. It is possible to create these EoT and HoT packets with a software defined radio and issue brake control commands to the EoT device, disrupting operations or potentially overwhelming the brake systems.

Affected products

• End-Of-Train And Head-Of-Train Remote Linking Protocol End-Of-Train And Head-Of-Train Remote Linking Protocol: any version

Published 2025-07-10. Last modified 2026-06-17.