This indicates a buffer overflow vulnerability in ACLogic CesarFTP server.
CesarFTP is a FTP server for Windows platform. Due to inadequate boundary checking, a remote attacker can execute arbitrary code on a target system by passing it a specially-crafted FTP command.
ACLogic CesarFTP version 0.98 b
An attacker can execute arbitrary code on a target system
Apply appropriate patches or upgrade the system to the latest non-vulnerable version