Certain Korenix JetWave devices allow authenticated users to execute arbitrary code as root via /syscmd.asp. This affects 2212X before 1.9.1 2212S before 1.9.1 2212G before 1.8 3220 V3 before 1.5.1 3420 V3 before 1.5.1 and 2311 through 2022-01-31.