Spain have lost both of their Group B matches at this summer's tournament, conceding seven times in the process and scoring just once.
Del Bosque has claimed that he has the full support of the Spanish Federation, but has not offered any guarantees as to his long-term future.
"I understand you want to know what will happen but everything has a process. We should make informed decisions for everyone, for the sake of Spanish football," he told reporters at a press conference.
"If we have the confidence of the Federation and the work we've done the past six years has been good... something has been done well.
"We need to think and see what is best for Spain. I haven't made any decision. It's true I have the support of the Federation but that doesn't mean we won't sit down after the World Cup to see what the situation is."
Del Bosque took charge of Spain in 2008.