> More than one in five Bitcoin nodes are running an old version of the Bitcoin core client that is known to be vulnerable. Patching software that is remotely

> More than one in five Bitcoin nodes are running an old version of the Bitcoin core client that is known to be vulnerable. Patching software that is remotely accessible is a pretty basic security measure. I suppose the risk of a hacked node is fairly low, maybe about the same as a node that's run by a malicious owner. Although exploiting nodes would extend the reach if a malicious party.