I'm just an SLF but this touches on my field of work.
A few things can be said of this:
1. If there is any opening for any of this to happen, it will. Lets just it is the builder discovering this through proper testing.
2. If the engineering of the critical systems are of the same quality as some of the IFE components I've looked at then I really hope the above item is the way it will happen.
3. There will be security vulnerabilities. Thats just life.
4. Never forget this one:
https://xkcd.com/538/
-A