{"api_version":"1","generated_at":"2026-04-23T01:31:46+00:00","cve":"CVE-2020-7543","urls":{"html":"https://cve.report/CVE-2020-7543","api":"https://cve.report/api/cve/CVE-2020-7543.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-7543","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-7543"},"summary":{"title":"CVE-2020-7543","description":"A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum & Modicon Premium (see security notifications for affected versions), that could cause denial of service when a specially crafted Read Physical Memory request over Modbus is sent to the controller.","state":"PUBLIC","assigner":"cybersecurity@schneider-electric.com","published_at":"2020-12-11 01:15:00","updated_at":"2021-08-18 22:42:00"},"problem_types":["CWE-754"],"metrics":[],"references":[{"url":"https://www.se.com/ww/en/download/document/SEVD-2020-343-08/","name":"https://www.se.com/ww/en/download/document/SEVD-2020-343-08/","refsource":"CONFIRM","tags":["Vendor Advisory"],"title":"Security Notification - Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum & Modicon Premium | Schneider Electric","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-7543","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7543","name":"NVD vulnerability 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