Can a Contract without a Fallback Function Still Participate in a Reentrancy Attack?

A contract without a fallback or a receive function cannot receive plain Ether, but it can still participate in a reentrancy attack if the attack is initiated through a specific, existing public function. However, if the vulnerable contract sends Ether using transfer or send , the transaction will revert immediately if the malicious contract has no payable function to receive it, effectively preventing the typical reentrancy loop.