CVE-2023-0027

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Modbus TCP Server Add On Instructions", "vendor": "Rockwell Automation", "versions": [{"status": "affected", "version": "2.00.00 - 2.00.03"}]}], "source": "PSIRT@rockwellautomation.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:rockwellautomation:modbus_tcp_server_add_on_instructions:*:*:*:*:*:*:*:*", "matchCriteriaId": "5D5053BE-2C68-4505-8B9D-D80A58C28952", "versionEndExcluding": "2.04.00", "versionStartIncluding": "2.00.00", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Rockwell Automation Modbus TCP Server AOI prior to 2.04.00 is vulnerable to an unauthorized user sending a malformed message that could cause the controller to respond with a copy of the most recent response to the last valid request. If exploited, an unauthorized user could read the connected device\u2019s Modbus TCP Server AOI information.\n\n"}], "id": "CVE-2023-0027", "lastModified": "2026-06-17T05:24:37.427", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "PSIRT@rockwellautomation.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-0027", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-02-26T16:04:18.498040Z", "version": "2.0.3"}}]}, "published": "2023-03-17T17:15:11.307", "references": [{"source": "PSIRT@rockwellautomation.com", "tags": ["Permissions Required", "Vendor Advisory"], "url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1138766"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Permissions Required", "Vendor Advisory"], "url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1138766"}], "sourceIdentifier": "PSIRT@rockwellautomation.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}], "source": "PSIRT@rockwellautomation.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-200"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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