● Covered by 1 source · 1 reportHigh impact1 negative
Coin-sized device can hack Boeing 737 Flight Management Computer via accessible port
Key points
- Device connects to an unprotected diagnostic port on Boeing 737s.
- It overrides signals between the MCDU and FMC.
- Remote control is possible via in-flight Wi-Fi.
- Researchers altered flight data like air temperature and aircraft weight.
Device Intercepts Flight Controls
Researchers from the University of California San Diego (UCSD) and Oberlin College created a coin-sized device capable of hacking a Boeing 737's Flight Management Computer (FMC). This gadget attaches to an external diagnostic port, typically used by mechanics, which connects to the FMC and the Multipurpose Control Display Unit (MCDU). The device is small enough to fit under a dust cap, making it difficult to detect during routine inspections.
Overriding Critical Systems
Once connected, the device overrides the signals between the MCDU, which pilots use to input and view data, and the FMC, which controls navigation, autopilot, and performance calculations. This allows the device to intercept, alter, and spoof data and commands. Examples of changes made by the researchers include modifying outside air temperature readings and aircraft weight inputs.
Remote Access Capability
A significant concern is the device's ability to connect to the internet via in-flight Wi-Fi. This feature enables remote control of the aircraft's avionics, meaning an attacker with physical access to install the device could then manipulate the aircraft's systems from a distance. The diagnostic port itself is located in one of the Boeing 737's Electronics and Equipment (E&E) bays and is only protected by a dust cap, making it accessible to anyone authorized to be near the aircraft.
Research Origin and Implications
The research began after experiments with hacking cars in the mid-2010s, prompting questions about aircraft vulnerability. The team acquired used aircraft parts to build an avionics stack for their experiments. The discovery of the communication bus vulnerability, similar to those exploited by credit card skimmers, led researchers to realize the potential for gaining control over aircraft systems through an accessible port. This finding suggests a significant security vulnerability that could impact aviation safety.
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
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Reporting from
Researchers developed a coin-sized device that can connect to an easily accessible diagnostic port on a Boeing 737, allowing it to override signals between the Multipurpose Control Display Unit (MCDU) and the Flight Management Computer (FMC). This device can intercept, alter, and spoof critical flight data, including takeoff weights and air temperature readings, and can be controlled remotely via in-flight Wi-Fi. The vulnerability highlights a potential security flaw in commercial aircraft avionics systems that could be exploited by individuals with physical access to the aircraft.