tftpd in Philippe Jounin Tftpd32 2.74 and earlier, as used in Wyse Simple Imager (WSI) and other products, allows remote attackers to cause a denial of service (daemon crash) via a long filename in a TFTP read (aka RRQ or get) request, a different vulnerability than CVE-2002-2226.
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.
Format string vulnerability in the client in Tftpd32 before 4.50 allows remote servers to cause a denial of service (crash) or possibly execute arbitrary code via format string specifiers in the Remote File field.