In D-Link DIR-860L v2.03, there is a buffer overflow vulnerability due to the lack of length verification for the SID field in gena.cgi. Attackers who successfully exploit this vulnerability can cause the remote target device to crash or execute arbitrary commands.
https://www.dlink.com/en/security-bulletin/
https://gist.github.com/XiaoCurry/574ed9c2b0d12cd0b45399116d82121c