This indicates an attack attempt to exploit a Buffer Overflow vulnerability in WinaXe.
The vulnerability is caused by an error when handling a overly long payloads in the command response. A remote attacker may be able to exploit this to execute arbitrary code within the context of the affected application, via a crafted command response.
WinaXe v7.7 FTP
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.