You would think we wouldn’t have an endless string of 0-day exploits for operating systems as well but here we are, for the last 25 years. It should be a simple and logical problem as well.
That might be a slightly less tractable problem than controlling a fixed set of flight systems to maneuver an aircraft with a fixed set of degrees of freedom.
Definitely not to understate the complexity of flight systems software at all, but the analogy to operating systems seems unhelpful.