The expiration date cannot remain a two digit box. Replace it with a drop down menu or a larger field.
I see requests for this every thing going back to 07. As we approach year 2020, the issue has become critical.
Every day I have at least one user who types in 2013 or whatever and the expiration date is just saved as 20. This is not a “wish”. It is a bug and should be addressed. Please move this to the top of your list.
Have a look at this topic: Change Default Credit Card Expiration - v1.x Configuration - CS-Cart Community Forums
It might help
John