{"affected": [{"affectedData": [{"product": "Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200", "vendor": "Schneider Electric SE", "versions": [{"status": "affected", "version": "Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200"}]}], "source": "cybersecurity@se.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:schneider-electric:modicom_m340_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "A53C0B78-6556-44B7-9546-75F48EDD87CB", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:schneider-electric:modicom_m340:-:*:*:*:*:*:*:*", "matchCriteriaId": "7F3D3249-CD51-496E-AB39-79D53EB318F8", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:schneider-electric:modicom_premium_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "AA79EF8E-C525-4CCB-AC21-F7493FA55BF7", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:schneider-electric:modicom_premium:*:*:*:*:*:*:*:*", "matchCriteriaId": "8BAD47C7-A8D1-44B3-9917-D5285E63F3B5", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:schneider-electric:modicom_quantum_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "62BAE494-82C9-4CC7-8149-37DD1ADA10F2", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:schneider-electric:modicom_quantum:*:*:*:*:*:*:*:*", "matchCriteriaId": "1B17B062-016A-45C2-A640-C8FD31E6E05F", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:schneider-electric:modicom_bmxnor0200h_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "D99FE33D-BBA0-40B7-B79C-E276BF8353FB", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:schneider-electric:modicom_bmxnor0200h:-:*:*:*:*:*:*:*", "matchCriteriaId": "8C420C7F-5B35-4775-8775-241FDD0B759C", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An Improper Check for Unusual or Exceptional Conditions vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where an unauthenticated user can send a specially crafted XML data via a POST request to cause the web server to become unavailable"}, {"lang": "es", "value": "Existe una vulnerabilidad de comprobaci\u00f3n incorrecta de condiciones inusuales o excepcionales en los servidores web embebidos en todos los Modicon M340, Premium, Quantum PLCs y BMXNOR0200, donde un usuario no autenticado puede enviar datos XML especialmente manipulados mediante una petici\u00f3n POST para provocar que el servidor web deje de estar disponible."}], "id": "CVE-2018-7833", "lastModified": "2026-06-17T02:03:49.580", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2018-12-17T22:29:00.347", "references": [{"source": "cybersecurity@se.com", "tags": ["Vendor Advisory"], "url": "https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/"}], "sourceIdentifier": "cybersecurity@se.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-754"}], "source": "nvd@nist.gov", "type": "Primary"}]}