This indicates an attack attempt to exploit a Buffer Overflow vulnerability in GetGo Download Manager.
The vulnerability is due to an input validation error when the vulnerable software handles a maliciously crafted HTTP Response. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted HTTP Response.
GetGo Download Manager version 188.8.131.522 and prior
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are unaware of any vendor supplied patch for this issue.