This indicates an attack attempt to exploit a Buffer Overflow Vulnerability in Delta Industrial Automation DOPSoft.
The vulnerability is due to improper handling of MulBlank records in XLS files. A remote attacker can exploit this vulnerability by enticing a target user into opening a crafted XLS file. Successful exploitation could result in execution of arbitrary code under the security context of the user running DOPSoft.
Delta Industrial Automation DOPSoft 2.00.07 and prior
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.