Buffer overflow in an ActiveX control in SSHelper.dll for Symantec Sygate Personal Firewall 5.6 build 2808 allows remote attackers to execute arbitrary code via a long third argument to the SetRegString method.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.