{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2021-34566",
        "assignerOrgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
        "state": "PUBLISHED",
        "assignerShortName": "CERTVDE",
        "requesterUserId": "520cc88b-a1c8-44f6-9154-21a4d74c769f",
        "dateReserved": "2021-06-10T19:19:08.023Z",
        "datePublished": "2022-11-09T15:17:14.172Z",
        "dateUpdated": "2025-05-01T14:21:10.643Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "product": "750-81xx/xxx-xxxFW",
                    "vendor": "WAGO",
                    "versions": [
                        {
                            "lessThanOrEqual": "FW18 Patch 2",
                            "status": "affected",
                            "version": "FW1",
                            "versionType": "custom"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "750-82xx/xxx-xxx",
                    "vendor": "WAGO",
                    "versions": [
                        {
                            "lessThanOrEqual": "FW18 Patch 2",
                            "status": "affected",
                            "version": "FW1",
                            "versionType": "custom"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "752-8303/8000-0002",
                    "vendor": "WAGO",
                    "versions": [
                        {
                            "lessThanOrEqual": "FW18 Patch 2",
                            "status": "affected",
                            "version": "FW1",
                            "versionType": "custom"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "762-4xxx",
                    "vendor": "WAGO",
                    "versions": [
                        {
                            "lessThanOrEqual": "FW18 Patch 2",
                            "status": "affected",
                            "version": "FW1",
                            "versionType": "custom"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "762-5xxx",
                    "vendor": "WAGO",
                    "versions": [
                        {
                            "lessThanOrEqual": "FW18 Patch 2",
                            "status": "affected",
                            "version": "FW1",
                            "versionType": "custom"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "762-6xxx",
                    "vendor": "WAGO",
                    "versions": [
                        {
                            "lessThanOrEqual": "FW18 Patch 2",
                            "status": "affected",
                            "version": "FW1",
                            "versionType": "custom"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "user": "00000000-0000-4000-9000-000000000000",
                    "value": "These vulnerabilities were reported to WAGO by Uri Katz of Claroty."
                }
            ],
            "datePublic": "2021-06-29T10:00:00.000Z",
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "In WAGO I/O-Check Service in multiple products an unauthenticated remote attacker can send a specially crafted packet containing OS commands to crash the iocheck process and write memory resulting in loss of integrity and DoS."
                        }
                    ],
                    "value": "In WAGO I/O-Check Service in multiple products an unauthenticated remote attacker can send a specially crafted packet containing OS commands to crash the iocheck process and write memory resulting in loss of integrity and DoS."
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-100",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-100 Overflow Buffers"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 9.1,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
                        "version": "3.1"
                    },
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-120",
                            "description": "CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
                "shortName": "CERTVDE",
                "dateUpdated": "2022-11-09T15:17:14.172Z"
            },
            "references": [
                {
                    "url": "https://cert.vde.com/en/advisories/VDE-2020-036/"
                }
            ],
            "source": {
                "advisory": "VDE-2020-036",
                "discovery": "EXTERNAL"
            },
            "title": "WAGO I/O-Check Service prone to Memory Overflow",
            "x_generator": {
                "engine": "Vulnogram 0.1.0-dev"
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-04T00:12:50.402Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://cert.vde.com/en/advisories/VDE-2020-036/",
                        "tags": [
                            "x_transferred"
                        ]
                    }
                ]
            },
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2025-05-01T14:21:03.913921Z",
                                "id": "CVE-2021-34566",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2025-05-01T14:21:10.643Z"
                }
            }
        ]
    }
}