CVE-2025-1727 Overview
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.
Critical Impact
The vulnerability allows unauthorized commands to be issued to critical train control systems, potentially leading to operation disruptions and safety hazards.
Affected Products
- Not Available
- Not Available
- Not Available
Discovery Timeline
- Not Available - Vulnerability discovered by Not Available
- Not Available - Responsible disclosure to Not Available
- Not Available - CVE CVE-2025-1727 assigned
- Not Available - Not Available releases security patch
- 2025-07-10 - CVE CVE-2025-1727 published to NVD
- 2025-07-15 - Last updated in NVD database
Technical Details for CVE-2025-1727
Vulnerability Analysis
The vulnerability arises from the use of a BCH checksum for packet verification, allowing an attacker with access to the network to forge packets. This can be exploited using a software-defined radio to send unauthorized brake control commands.
Root Cause
The reliance on a weak BCH checksum for packet integrity allows for packet forgery.
Attack Vector
Adjacent Network
# Example exploitation code (sanitized)
import sofware_defined_radio as sdr
packet = create_brake_command_packet("EoT")
sdr.send(packet)
Detection Methods for CVE-2025-1727
Indicators of Compromise
- Unusual RF traffic in train operation areas
- Unexpected or unauthorized brake commands
- Anomalies in train control system logs
Detection Strategies
Network monitoring for anomalous RF activity and logging of all EoT and HoT commands. Use of intrusion detection systems to alert on unauthorized command patterns.
Monitoring Recommendations
Deploy RF spectrum analysis tools to monitor for signs of unauthorized packet creation and transmission.
How to Mitigate CVE-2025-1727
Immediate Actions Required
- Isolate RF communication networks from unauthorized access.
- Strengthen packet validation by upgrading checksum algorithms.
- Implement continuous monitoring of RF spectrum around train operations.
Patch Information
Not Available
Workarounds
Consider using stronger cryptographic techniques for packet verification and encryption to prevent unauthorized command issuance.
# Configuration example
sudo systemctl enable rf-monitor
sudo systemctl start rf-monitor
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
