Yes, it is potentially ambiguous. It could mean "is there any single one person out there who can help me" or "is it true that no matter which person came along would be able to help me", eg "can anyone help me or does it have to be a supervisor". In absence of reason to believe otherwise you would assume the first.azz said:"Can anyone help me?"
Isn't this sentence ambiguous? Can't it have both these meanings:
1. Is there anyone at all who can help me?
2. Can just anyone help me?
Are 1 and 2 both correct?