The risk is that the signature is not true. If there is a dispute, such as the payee does not admit that he has received the money and the signature is not his own, the bank will bear the corresponding responsibility of lax examination.
Remedial measures 1. You should contact the payee in time and ask him to sign the check.
Or two, the original check invalid, let the issuing unit to open a new check, according to the formal procedures to do a real signature.