{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-84235",
        "assignerOrgId": "b73dd486-f505-4403-b634-40b078b177f0",
        "state": "PUBLISHED",
        "assignerShortName": "Rockwell",
        "dateReserved": "2026-09-01T12:56:28.970Z",
        "datePublished": "2026-09-01T13:07:28.779Z",
        "dateUpdated": "2026-09-01T13:07:28.779Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "b73dd486-f505-4403-b634-40b078b177f0",
                "shortName": "Rockwell",
                "dateUpdated": "2026-09-01T13:07:28.779Z"
            },
            "title": "Rockwell Automation 1756-ENBT Denial of Service Vulnerability",
            "affected": [
                {
                    "vendor": "Rockwell Automation",
                    "product": "1756-ENBT Module",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "All versions"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "cpeApplicability": [
                {
                    "operator": "OR",
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:rockwell_automation:1756-enbt_module:all_versions:*:*:*:*:*:*:*"
                                }
                            ]
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A denial-of-service security issue exists in the affected product. The security issue stems from a crafted CIP packet being sent crashing the module. The device requires a restart to recover.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "A denial-of-service security issue exists in the affected product. The security issue stems from a crafted CIP packet being sent crashing the module. The device requires a restart to recover."
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1798.html"
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "NOT_DEFINED",
                        "providerUrgency": "NOT_DEFINED",
                        "version": "4.0",
                        "baseSeverity": "HIGH",
                        "baseScore": 8.7,
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
                    }
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "value": "Upgrade to 1756-EN2T or\n\n\n\n1756-EN4TR",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "<p>Upgrade to 1756-EN2T or</p><p>1756-EN4TR</p>"
                        }
                    ]
                }
            ],
            "source": {
                "advisory": "SD1798",
                "discovery": "EXTERNAL"
            },
            "x_generator": {
                "engine": "Vulnogram 1.0.5"
            }
        }
    }
}