{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ID": "CVE-2021-20596",
        "ASSIGNER": "Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "n/a",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "MELSEC-F Series FX3U-ENET; FX3U-ENET-L; FX3U-ENET-P502",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "Firmware version 1.14 and prior"
                                        },
                                        {
                                            "version_value": "Firmware version 1.14 and prior"
                                        },
                                        {
                                            "version_value": "Firmware version 1.14 and prior"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "NULL Pointer Dereference"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "MISC",
                "name": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-006_en.pdf",
                "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-006_en.pdf"
            },
            {
                "refsource": "MISC",
                "name": "https://jvn.jp/vu/JVNVU94348759/index.html",
                "url": "https://jvn.jp/vu/JVNVU94348759/index.html"
            },
            {
                "refsource": "MISC",
                "name": "https://us-cert.cisa.gov/ics/advisories/icsa-21-201-01",
                "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-201-01"
            }
        ]
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "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."
            }
        ]
    }
}