The MessageBrokerServlet servlet in Moxa OnCell Central Manager before 2.2 does not require authentication, which allows remote attackers to obtain administrative access via a command, as demonstrated by the addUserAndGroup action.
Reference Links(if available):
CVSS Score (if available)
v2: / HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
v3: / HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L