An issue was discovered on Moxa AWK-3121 1.14 devices. It is intended that an administrator can download /systemlog.log (the system log). However, the same functionality allows an attacker to download the file without any authentication or authorization.
https://seclists.org/bugtraq/2019/Jun/8
https://github.com/samuelhuntley/Moxa_AWK_1121/blob/master/Moxa_AWK_1121