An issue was discovered in D-Link DIR-816 A2 1.10 B05 devices. Within the handler function of the /goform/addassignment route, a very long text entry for the"'s_ip" and "s_mac" fields could lead to a Stack-Based Buffer Overflow and overwrite the return address.
https://www.dlink.com/en/security-bulletin/
https://github.com/GD008/vuln/blob/main/DIR-816_stackoverflow.md