{"id":"CVE-2021-20591","state":"PUBLISHED","title":"Uncontrolled Resource Consumption vulnerability in Mitsubishi Electric MELSEC iQ-R series CPU modules (R00/01/02CPU all versions, R04/08/16/32/120(EN)CPU all versions, R08/16/32/12","description":"Uncontrolled Resource Consumption vulnerability in Mitsubishi Electric MELSEC iQ-R series CPU modules (R00/01/02CPU all versions, R04/08/16/32/120(EN)CPU all versions, R08/16/32/120SFCPU all versions, R08/16/32/120PCPU all versions, R08/16/32/120PSFCPU all versions) allows a remote unauthenticated attacker to prevent legitimate clients from connecting to the MELSOFT transmission port (TCP/IP) by not closing a connection properly, which may lead to a denial of service (DoS) condition.","publishedAt":"2021-06-11T15:52:45.000Z","updatedAt":"2024-08-03T17:45:44.388Z","severity":null,"assigner":"Mitsubishi","products":["n/a MELSEC iQ-R series CPU modules"],"affected":[{"vendor":"n/a","product":"MELSEC iQ-R series CPU modules","versions":[{"version":"R00/01/02CPU all versions, R04/08/16/32/120(EN)CPU all versions, R08/16/32/120SFCPU all versions, R08/16/32/120PCPU all versions, R08/16/32/120PSFCPU all versions","status":"affected"}]}],"references":["https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-003_en.pdf","https://jvn.jp/vu/JVNVU98060539/index.html"],"weaknesses":[],"ingestedAt":"2026-10-29T19:47:55.610Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/20xxx/CVE-2021-20591.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-20591","state":"PUBLISHED","datePublished":"2021-06-11T15:52:45.000Z","dateUpdated":"2024-08-03T17:45:44.388Z","assignerShortName":"Mitsubishi","assignerOrgId":"e0f77b61-78fd-4786-b3fb-1ee347a748ad","dateReserved":"2020-12-17T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Uncontrolled Resource Consumption vulnerability in Mitsubishi Electric MELSEC iQ-R series CPU modules (R00/01/02CPU all versions, R04/08/16/32/120(EN)CPU all versions, R08/16/32/120SFCPU all versions, R08/16/32/120PCPU all versions, R08/16/32/120PSFCPU all versions) allows a remote unauthenticated attacker to prevent legitimate clients from connecting to the MELSOFT transmission port (TCP/IP) by not closing a connection properly, which may lead to a denial of service (DoS) condition."}],"affected":[{"vendor":"n/a","product":"MELSEC iQ-R series CPU modules","versions":[{"version":"R00/01/02CPU all versions, R04/08/16/32/120(EN)CPU all versions, R08/16/32/120SFCPU all versions, R08/16/32/120PCPU all versions, R08/16/32/120PSFCPU all versions","status":"affected"}]}],"references":[{"url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-003_en.pdf","tags":["x_refsource_MISC"]},{"url":"https://jvn.jp/vu/JVNVU98060539/index.html","tags":["x_refsource_MISC"]}],"problemTypes":[{"descriptions":[{"description":"Uncontrolled Resource Consumption","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"Mitsubishi","dateUpdated":"2021-06-11T15:52:45.000Z","orgId":"e0f77b61-78fd-4786-b3fb-1ee347a748ad"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp","ID":"CVE-2021-20591","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"MELSEC iQ-R series CPU modules","version":{"version_data":[{"version_value":"R00/01/02CPU all versions, R04/08/16/32/120(EN)CPU all versions, R08/16/32/120SFCPU all versions, R08/16/32/120PCPU all versions, R08/16/32/120PSFCPU all versions"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Uncontrolled Resource Consumption vulnerability in Mitsubishi Electric MELSEC iQ-R series CPU modules (R00/01/02CPU all versions, R04/08/16/32/120(EN)CPU all versions, R08/16/32/120SFCPU all versions, R08/16/32/120PCPU all versions, R08/16/32/120PSFCPU all versions) allows a remote unauthenticated attacker to prevent legitimate clients from connecting to the MELSOFT transmission port (TCP/IP) by not closing a connection properly, which may lead to a denial of service (DoS) condition."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Uncontrolled Resource Consumption"}]}]},"references":{"reference_data":[{"name":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-003_en.pdf","refsource":"MISC","url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-003_en.pdf"},{"name":"https://jvn.jp/vu/JVNVU98060539/index.html","refsource":"MISC","url":"https://jvn.jp/vu/JVNVU98060539/index.html"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-003_en.pdf","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://jvn.jp/vu/JVNVU98060539/index.html","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T17:45:44.388Z"}}]}}}