A security issue in the firmware image verification implementation at Supermicro MBD-X12DPG-OA6 . An attacker with administrator privileges can upload a specially crafted image, which can cause a stack overflow due to the unchecked fat->fsd.max_fld.
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).