Format string vulnerability in Tftpd32 2.81 allows remote attackers to cause a denial of service via format string specifiers in a filename in a (1) GET or (2) SEND request.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24250
http://www.vupen.com/english/advisories/2006/0263
http://www.securityfocus.com/bid/16333
http://www.securityfocus.com/archive/1/422405/100/0/threaded
http://www.kb.cert.org/vuls/id/632633