This indicates a possible exploit of a denial-of-service vulnerability in South River Technologies Titan FTP Server 6.26 build 630.
Remote attackers may exploit this vulnerability by sending a "SITE WHO" command.
South River Technologies Titan FTP Server 6.26 build 630
Denial of Services
This issue is reported to be fixed in Titan FTP Server 6.30.631. Please refer to the vendor's website for detailed information: