This indicates an attack attempt against a stack Buffer Overflow vulnerability in InduSoft Web Studio.
The vulnerability is due an insufficient boundary check on the vulnerable application. An attacker can exploit this by sending a crafted request to the application. Successful attacks may allow the attacker to execute arbitrary code in the context of the application.
InduSoft Web Studio prior to 7.0 + SP1 + P1
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply patches or fixes from the vendor, available from the website: