Unspecified vulnerability in Funkwerk System Software before 7.4.1 PATCH 9 for certain Funkwerk Router / VPN devices allows remote attackers to cause a denial of service (panic and reboot) via unspecified DNS requests.
https://exchange.xforce.ibmcloud.com/vulnerabilities/39731
http://www.securityfocus.com/bid/27314
http://www.funkwerk-ec.com/portal/downloadcenter/dateien/x2300/r7401p09/readme_741p9_en.pdf