Buffer overflow in the URL filtering function in Internet Initiative Japan SEIL/X1, SEIL/X2, and SEIL/B1 firmware 2.40 through 2.51 allows remote attackers to execute arbitrary code via unspecified vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/54051
http://www.vupen.com/english/advisories/2009/3111
http://www.seil.jp/seilseries/security/2009/a00669.php
http://secunia.com/advisories/37154