TP Link MR200 V4 Firmware version 210201 was discovered to contain a null-pointer-dereference in the web administration panel on /cgi/login…

TP Link MR200 V4 Firmware version 210201 was discovered to contain a null-pointer-dereference in the web administration panel on /cgi/login via the sign, Action or LoginStatus query parameters which could lead to a denial of service by a local or remote unauthenticated attacker.