{"api_version":"1","generated_at":"2026-04-23T16:33:22+00:00","cve":"CVE-2020-5543","urls":{"html":"https://cve.report/CVE-2020-5543","api":"https://cve.report/api/cve/CVE-2020-5543.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-5543","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-5543"},"summary":{"title":"CVE-2020-5543","description":"TCP function included in the firmware of Mitsubishi Electric MELQIC IU1 series IU1-1M20-D firmware version 1.0.7 and earlier does not properly manage sessions, which allows remote attackers to stop the network functions or execute malware via a specially crafted packet.","state":"PUBLIC","assigner":"vultures@jpcert.or.jp","published_at":"2020-03-16 02:15:00","updated_at":"2020-03-18 19:37:00"},"problem_types":["CWE-384"],"metrics":[],"references":[{"url":"https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2019-004.pdf","name":"https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2019-004.pdf","refsource":"MISC","tags":["Patch","Vendor Advisory"],"title":"","mime":"application/pdf","httpstatus":"200","archivestatus":"200"},{"url":"https://jvn.jp/en/vu/JVNVU92370624/index.html","name":"https://jvn.jp/en/vu/JVNVU92370624/index.html","refsource":"MISC","tags":["Third Party Advisory"],"title":"JVNVU#92370624: Multiple vulnerabilities in TCP/IP function on Mitsubishi Electric data collection analyzer MELQIC IU1 series","mime":"text/xml","httpstatus":"200","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-5543","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5543","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"5543","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"iu1-1m20-d","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"5543","vulnerable":"0","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"iu1-1m20-d","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"5543","vulnerable":"1","versionEndIncluding":"1.0.7","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"mitsubishielectric","cpe5":"iu1-1m20-d_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_version":"4.0","references":{"reference_data":[{"url":"https://jvn.jp/en/vu/JVNVU92370624/index.html","refsource":"MISC","name":"https://jvn.jp/en/vu/JVNVU92370624/index.html"},{"url":"https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2019-004.pdf","refsource":"MISC","name":"https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2019-004.pdf"}]},"description":{"description_data":[{"lang":"eng","value":"TCP function included in the firmware of Mitsubishi Electric MELQIC IU1 series IU1-1M20-D firmware version 1.0.7 and earlier does not properly manage sessions, which allows remote attackers to stop the network functions or execute malware via a specially crafted packet."}]},"data_type":"CVE","affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"version":{"version_data":[{"version_value":"IU1-1M20-D firmware version 1.0.7 and earlier"}]},"product_name":"Mitsubishi Electric MELQIC IU1 series"}]},"vendor_name":"Mitsubishi Electric Corporation"}]}},"CVE_data_meta":{"ID":"CVE-2020-5543","ASSIGNER":"vultures@jpcert.or.jp","STATE":"PUBLIC"},"data_format":"MITRE","problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Fails to manage sessions"}]}]}},"nvd":{"publishedDate":"2020-03-16 02:15:00","lastModifiedDate":"2020-03-18 19:37:00","problem_types":["CWE-384"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":7.5},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:mitsubishielectric:iu1-1m20-d_firmware:*:*:*:*:*:*:*:*","versionEndIncluding":"1.0.7","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:h:mitsubishielectric:iu1-1m20-d:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"5543","Ordinal":"165789","Title":"CVE-2020-5543","CVE":"CVE-2020-5543","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"5543","Ordinal":"1","NoteData":"TCP function included in the firmware of Mitsubishi Electric MELQIC IU1 series IU1-1M20-D firmware version 1.0.7 and earlier does not properly manage sessions, which allows remote attackers to stop the network functions or execute malware via a specially crafted packet.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"5543","Ordinal":"2","NoteData":"2020-03-15","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"5543","Ordinal":"3","NoteData":"2020-03-15","Type":"Other","Title":"Modified"}]}}}