Name of the Vulnerable Software and Affected Versions:

FIRSTNUM JC21A-04 devices versions through 2.01ME/FN

Description:

FIRSTNUM JC21A-04 devices enable the SSH service by default with the credentials `root`/`admin`. The graphical user interface (GUI) does not provide a method to disable this account.

Recommendations:

For versions through 2.01ME/FN, change the default `root` account password or disable the SSH service.