The vulnerabilities of the Ethernet modules FX3U-ENET-ADP and Ethernet FX3U-ENET(-L) of the microprogrammable logic controllers MELSEC iQ-F series, such as FX3U, FX3UC, FX3G, FX3GC-32MT, FX3GE, FX3GA, FX3S, and FX3SA, allow attackers to circumvent security restrictions and reset system settings.

The vulnerability of the Ethernet modules FX3U-ENET-ADP and Ethernet FX3U-ENET-L of the microprogrammable logic controllers MELSEC iQ-F series, such as FX3U, FX3UC, FX3G, FX3GC-32MT, FX3GE, FX3GA, FX3S, and FX3SA, stems from the ability to bypass authentication by using capture-replay techniques...