TFTPUtil GUI versions 1.2.0 and 1.3.0 suffer from a denial of service vulnerability.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/73950/tftputil-dos.txt
Source: https://packetstormsecurity.com/files/73950/TFTPUtil-GUI-Denial-Of-Service.html