{"affected":[{"affectedData":[{"product":"MELSEC iQ-F series FX5U(C) CPU unit","vendor":"Mitsubishi Electric Corporation","versions":[{"status":"affected","version":"firmware version 1.060 and earlier"}]}],"source":"vultures@jpcert.or.jp"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:mitsubishielectric:melsec_iq-f_fx5u_cpu_firmware:*:*:*:*:*:*:*:*","matchCriteriaId":"6A8F2FC3-2AB0-495D-BD49-1BAD229D4602","versionEndIncluding":"1.060","vulnerable":true}],"negate":false,"operator":"OR"},{"cpeMatch":[{"criteria":"cpe:2.3:h:mitsubishielectric:melsec_iq-f_fx5u_cpu:-:*:*:*:*:*:*:*","matchCriteriaId":"DE9A97E7-29E3-4F27-9203-CF51CD90A1B4","vulnerable":false}],"negate":false,"operator":"OR"}],"operator":"AND"}],"cveTags":[],"descriptions":[{"lang":"en","value":"Improper check or handling of exceptional conditions in MELSEC iQ-F series FX5U(C) CPU unit firmware version 1.060 and earlier allows an attacker to cause a denial-of-service (DoS) condition on program execution and communication by sending a specially crafted ARP packet."},{"lang":"es","value":"Una comprobación o manejo inapropiado de condiciones excepcionales en la unidad CPU FX5U(C) de MELSEC iQ-F series versión 1.060 y anterior, permite a un atacante causar una condición de denegación de servicio (DoS) en una ejecución del programa y la comunicación mediante el envío de un paquete ARP especialmente diseñado."}],"id":"CVE-2020-5665","lastModified":"2026-06-17T03:22:03.757","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"LOW","cvssData":{"accessComplexity":"LOW","accessVector":"ADJACENT_NETWORK","authentication":"NONE","availabilityImpact":"PARTIAL","baseScore":3.3,"confidentialityImpact":"NONE","integrityImpact":"NONE","vectorString":"AV:A/AC:L/Au:N/C:N/I:N/A:P","version":"2.0"},"exploitabilityScore":6.5,"impactScore":2.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":2.8,"impactScore":4.0,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2020-12-14T03:15:13.653","references":[{"source":"vultures@jpcert.or.jp","tags":["Third Party Advisory"],"url":"https://jvn.jp/vu/JVNVU95638588/index.html"},{"source":"vultures@jpcert.or.jp","tags":["Third Party Advisory","US Government Resource"],"url":"https://us-cert.cisa.gov/ics/advisories/icsa-20-345-01"},{"source":"vultures@jpcert.or.jp","tags":["Vendor Advisory"],"url":"https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-018.pdf"},{"source":"vultures@jpcert.or.jp","tags":["Vendor Advisory"],"url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-018_en.pdf"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://jvn.jp/vu/JVNVU95638588/index.html"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","US Government Resource"],"url":"https://us-cert.cisa.gov/ics/advisories/icsa-20-345-01"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"url":"https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-018.pdf"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-018_en.pdf"}],"sourceIdentifier":"vultures@jpcert.or.jp","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"NVD-CWE-noinfo"}],"source":"nvd@nist.gov","type":"Primary"}]}