It is rather unlikely since your credit score is looked at very carefully as is other criterias. However if the business you intend to open or have is very solid and have a good cash flow perhaps you can get someone who has good credit to apply with you as a co-applicant.
For a person to get any loans credit history has to be good. With poor credit it is very difficult to get a loan. If you have some known person in the bank in the managerial level then he might help you.