{"api_version":"1","generated_at":"2026-07-23T20:49:07+00:00","cve":"CVE-2021-20586","urls":{"html":"https://cve.report/CVE-2021-20586","api":"https://cve.report/api/cve/CVE-2021-20586.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-20586","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-20586"},"summary":{"title":"CVE-2021-20586","description":"Resource management errors vulnerability in a robot controller of MELFA FR Series(controller \"CR800-*V*D\" of RV-*FR***-D-* all versions, controller \"CR800-*HD\" of RH-*FRH***-D-* all versions, controller \"CR800-*HRD\" of RH-*FRHR***-D-* all versions, controller \"CR800-*V*R with R16RTCPU\" of RV-*FR***-R-* all versions, controller \"CR800-*HR with R16RTCPU\" of RH-*FRH***-R-* all versions, controller \"CR800-*HRR with R16RTCPU\" of RH-*FRHR***-R-* all versions, controller \"CR800-*V*Q with Q172DSRCPU\" of RV-*FR***-Q-* all versions, controller \"CR800-*HQ with Q172DSRCPU\" of RH-*FRH***-Q-* all versions, controller \"CR800-*HRQ with Q172DSRCPU\" of RH-*FRHR***-Q-* all versions) and a robot controller of MELFA CR Series(controller \"CR800-CVD\" of RV-8CRL-D-* all versions, controller \"CR800-CHD\" of RH-*CRH**-D-* all versions) as well as a cooperative robot ASSISTA(controller \"CR800-05VD\" of RV-5AS-D-* all versions) allows a remote unauthenticated attacker to cause a DoS of the execution of the robot program and the Ethernet communication by sending a large amount of packets in burst over a short period of time. As a result of DoS, an error may occur. A reset is required to recover it if the error occurs.","state":"PUBLIC","assigner":"Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp","published_at":"2021-01-29 15:15:00","updated_at":"2022-07-12 17:42:00"},"problem_types":["NVD-CWE-noinfo"],"metrics":[],"references":[{"url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-019_en.pdf","name":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-019_en.pdf","refsource":"MISC","tags":["Vendor Advisory"],"title":"","mime":"application/pdf","httpstatus":"200","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-20586","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20586","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"20586","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"rh12frh55","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"0","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"rh12frh55","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"0","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"rh12frh55","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"mitsubishielectric","cpe5":"rh12frh55_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"mitsubishielectric","cpe5":"rh12frh55_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"rh12frh85","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"0","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"rh12frh85","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"0","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"rh12frh85","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"mitsubishielectric","cpe5":"rh12frh85_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"mitsubishielectric","cpe5":"rh12frh85_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"rh12rfh70","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"0","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"rh12rfh70","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"0","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"rh12rfh70","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"mitsubishielectric","cpe5":"rh12rfh70_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"mitsubishielectric","cpe5":"rh12rfh70_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"rh1frhr","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"0","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"rh1frhr","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"0","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"mitsubishielectric","cpe5":"rh1frhr","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"20586","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"mitsubishielectric","cpe5":"rh1frhr_firmware","cpe6":"*","cpe7":"*","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Electric MELFA (Update A) Uncontrolled Resource Consumption Vulnerability (ICSA-21-021-04)"}]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2021-20586","ASSIGNER":"Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"n/a","product":{"product_data":[{"product_name":"Robot Controller MELFA FR Series; Robot Controller CR Series; Cooperative Robot ASSISTA","version":{"version_data":[{"version_value":"Controller \"CR800-*V*D\" of RV-*FR***-D-* all versions, Controller \"CR800-*HD\" of RH-*FRH***-D-* all versions, Controller \"CR800-*HRD\" of RH-*FRHR***-D-* all versions, Controller \"CR800-*V*R with R16RTCPU\" of RV-*FR***-R-* all versions, Controller \"CR800-*HR with R16RTCPU\" of RH-*FRH***-R-* all versions, Controller \"CR800-*HRR with R16RTCPU\" of RH-*FRHR***-R-* all versions, Controller \"CR800-*V*Q with Q172DSRCPU\" of RV-*FR***-Q-* all versions, Controller \"CR800-*HQ with Q172DSRCPU\" of RH-*FRH***-Q-* all versions, Controller \"CR800-*HRQ with Q172DSRCPU\" of RH-*FRHR***-Q-* all versions"},{"version_value":"Controller \"CR800-CVD\" of RV-8CRL-D-* all versions, Controller \"CR800-CHD\" of RH-*CRH**-D-* all versions"},{"version_value":"Controller \"CR800-05VD\" of RV-5AS-D-* all versions"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Resource management errors"}]}]},"references":{"reference_data":[{"refsource":"MISC","name":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-019_en.pdf","url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-019_en.pdf"}]},"description":{"description_data":[{"lang":"eng","value":"Resource management errors vulnerability in a robot controller of MELFA FR Series(controller \"CR800-*V*D\" of RV-*FR***-D-* all versions, controller \"CR800-*HD\" of RH-*FRH***-D-* all versions, controller \"CR800-*HRD\" of RH-*FRHR***-D-* all versions, controller \"CR800-*V*R with R16RTCPU\" of RV-*FR***-R-* all versions, controller \"CR800-*HR with R16RTCPU\" of RH-*FRH***-R-* all versions, controller \"CR800-*HRR with R16RTCPU\" of RH-*FRHR***-R-* all versions, controller \"CR800-*V*Q with Q172DSRCPU\" of RV-*FR***-Q-* all versions, controller \"CR800-*HQ with Q172DSRCPU\" of RH-*FRH***-Q-* all versions, controller \"CR800-*HRQ with Q172DSRCPU\" of RH-*FRHR***-Q-* all versions) and a robot controller of MELFA CR Series(controller \"CR800-CVD\" of RV-8CRL-D-* all versions, controller \"CR800-CHD\" of RH-*CRH**-D-* all versions) as well as a cooperative robot ASSISTA(controller \"CR800-05VD\" of RV-5AS-D-* all versions) allows a remote unauthenticated attacker to cause a DoS of the execution of the robot program and the Ethernet communication by sending a large amount of packets in burst over a short period of time. As a result of DoS, an error may occur. A reset is required to recover it if the error occurs."}]}},"nvd":{"publishedDate":"2021-01-29 15:15:00","lastModifiedDate":"2022-07-12 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management errors vulnerability in a robot controller of MELFA FR Series(controller \"CR800-*V*D\" of RV-*FR***-D-* all versions, controller \"CR800-*HD\" of RH-*FRH***-D-* all versions, controller \"CR800-*HRD\" of RH-*FRHR***-D-* all versions, controller \"CR800-*V*R with R16RTCPU\" of RV-*FR***-R-* all versions, controller \"CR800-*HR with R16RTCPU\" of RH-*FRH***-R-* all versions, controller \"CR800-*HRR with R16RTCPU\" of RH-*FRHR***-R-* all versions, controller \"CR800-*V*Q with Q172DSRCPU\" of RV-*FR***-Q-* all versions, controller \"CR800-*HQ with Q172DSRCPU\" of RH-*FRH***-Q-* all versions, controller \"CR800-*HRQ with Q172DSRCPU\" of RH-*FRHR***-Q-* all versions) and a robot controller of MELFA CR Series(controller \"CR800-CVD\" of RV-8CRL-D-* all versions, controller \"CR800-CHD\" of RH-*CRH**-D-* all versions) as well as a cooperative robot ASSISTA(controller \"CR800-05VD\" of RV-5AS-D-* all versions) allows a remote unauthenticated attacker to cause a DoS of the execution of the robot program and the Ethernet communication by sending a large amount of packets in burst over a short period of time. As a result of DoS, an error may occur. A reset is required to recover it if the error occurs.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"20586","Ordinal":"2","NoteData":"2021-01-29","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"20586","Ordinal":"3","NoteData":"2021-01-29","Type":"Other","Title":"Modified"}]}}}