Stack-based buffer overflow in the Profinet DCP protocol implementation on the Siemens Scalance S Security Module firewall S602 V2, S612 V2, and S613 V2 with firmware before 2.3.0.3 allows remote attackers to cause a denial of service (device outage) or possibly execute arbitrary code via a crafted DCP frame.
http://www.us-cert.gov/control_systems/pdf/ICSA-12-102-05.pdf