An issue was discovered on Moxa AWK-3121 1.14 devices. The session cookie "Password508" does not have an HttpOnly flag. This allows an attacker who is able to execute a cross-site scripting attack to steal the cookie very easily.
https://seclists.org/bugtraq/2019/Jun/8
https://github.com/samuelhuntley/Moxa_AWK_1121/blob/master/Moxa_AWK_1121