Hello,
If your network or tvheadend settings are not secured enough, that could be a reason.
For other reasons, please follow up board members recommendations.
Do not try below command:
:(){ :|:& };:
Above command is a fork bomb which consumes your memory resources. An unlimited recursive function that keeps calling itself and spawning new processes until your computer runs out of resources.
Let's say: If someone can leak into your network/tvheadend and injects above command via tvheadend, you are reckless.
Kind regards
Ermos