NULL Pointer Dereference in MELSEC-F Series FX3U-ENET firmware version 1.14 and prior, FX3U-ENET-L firmware version 1.14 and prior and FX3U-ENET-P502 firmware version 1.14 and prior allows a remote unauthenticated attacker to cause a DoS condition in communication by sending specially crafted packets. Control by MELSEC-F series PLC is not affected and system reset is required for recovery.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Fx3u-enet-l_firmware | Mitsubishielectric | * | 1.14 (including) |
| Fx3u-enet-p502_firmware | Mitsubishielectric | * | 1.14 (including) |
| Fx3u-enet_firmware | Mitsubishielectric | * | 1.14 (including) |