{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-20599",
        "ASSIGNER": "Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Cleartext Transmission of Sensitive InformationCleartext transmission of sensitive information vulnerability in MELSEC iQ-R series Safety CPU R08/16/32/120SFCPU firmware versions \"26\" and prior and MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU firmware versions \"11\" and prior allows a remote unauthenticated attacker to login to a target CPU module by obtaining credentials other than password."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-319 Cleartext Transmission of Sensitive Information",
                        "cweId": "CWE-319"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Mitsubishi Electric Corporation",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "MELSEC iQ-R Series Safety CPU R08SFCPU",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "Firmware versions \"26\" and prior"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "MELSEC iQ-R series Safety CPU R16SFCPU",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "Firmware versions \"26\" and prior"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "MELSEC iQ-R series Safety CPU R32SFCPU",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "Firmware versions \"26\" and prior"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "MELSEC iQ-R series Safety CPU R120SFCPU",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "Firmware versions \"26\" and prior"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "Firmware versions \"11\" and prior"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "MELSEC iQ-R series SIL2 Process CPU R16PSFCPU",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "Firmware versions \"11\" and prior"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "MELSEC iQ-R series SIL2 Process CPU R32PSFCPU",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "Firmware versions \"11\" and prior"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "MELSEC iQ-R series SIL2 Process CPU R120PSFCPU",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "Firmware versions \"11\" and prior"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-011_en.pdf",
                "refsource": "MISC",
                "name": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-011_en.pdf"
            },
            {
                "url": "https://jvn.jp/vu/JVNVU98578731",
                "refsource": "MISC",
                "name": "https://jvn.jp/vu/JVNVU98578731"
            },
            {
                "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-287-03",
                "refsource": "MISC",
                "name": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-287-03"
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.1.0-dev"
    },
    "source": {
        "discovery": "UNKNOWN"
    },
    "impact": {
        "cvss": [
            {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 9.1,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                "version": "3.1"
            }
        ]
    }
}