{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "MELSEC iQ-R Series Safety CPU R08SFCPU", "vendor": "Mitsubishi Electric Corporation", "versions": [{"status": "affected", "version": "Firmware versions \"26\" and prior"}]}, {"defaultStatus": "unaffected", "product": "MELSEC iQ-R series Safety CPU R16SFCPU", "vendor": "Mitsubishi Electric Corporation", "versions": [{"status": "affected", "version": "Firmware versions \"26\" and prior"}]}, {"defaultStatus": "unaffected", "product": "MELSEC iQ-R series Safety CPU R32SFCPU", "vendor": "Mitsubishi Electric Corporation", "versions": [{"status": "affected", "version": "Firmware versions \"26\" and prior"}]}, {"defaultStatus": "unaffected", "product": "MELSEC iQ-R series Safety CPU R120SFCPU", "vendor": "Mitsubishi Electric Corporation", "versions": [{"status": "affected", "version": "Firmware versions \"26\" and prior"}]}, {"defaultStatus": "unaffected", "product": "MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU", "vendor": "Mitsubishi Electric Corporation", "versions": [{"status": "affected", "version": "Firmware versions \"11\" and prior"}]}, {"defaultStatus": "unaffected", "product": "MELSEC iQ-R series SIL2 Process CPU R16PSFCPU", "vendor": "Mitsubishi Electric Corporation", "versions": [{"status": "affected", "version": "Firmware versions \"11\" and prior"}]}, {"defaultStatus": "unaffected", "product": "MELSEC iQ-R series SIL2 Process CPU R32PSFCPU", "vendor": "Mitsubishi Electric Corporation", "versions": [{"status": "affected", "version": "Firmware versions \"11\" and prior"}]}, {"defaultStatus": "unaffected", "product": "MELSEC iQ-R series SIL2 Process CPU R120PSFCPU", "vendor": "Mitsubishi Electric Corporation", "versions": [{"status": "affected", "version": "Firmware versions \"11\" and prior"}]}], "source": "Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp"}, {"affectedData": [{"cpes": ["cpe:2.3:h:mitsubishielectric:melsec_iq-r08sfcpu:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "melsec_iq-r08sfcpu", "vendor": "mitsubishielectric", "versions": [{"status": "affected", "version": "-"}]}, {"cpes": ["cpe:2.3:h:mitsubishielectric:r16sfcpu:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "r16sfcpu", "vendor": "mitsubishielectric", "versions": [{"status": "affected", "version": "-"}]}, {"cpes": ["cpe:2.3:h:mitsubishielectric:r32sfcpu:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "r32sfcpu", "vendor": "mitsubishielectric", "versions": [{"status": "affected", "version": "-"}]}, {"cpes": ["cpe:2.3:h:mitsubishielectric:r120sfcpu:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "r120sfcpu", "vendor": "mitsubishielectric", "versions": [{"status": "affected", "version": "-"}]}, {"cpes": ["cpe:2.3:h:mitsubishielectric:r08psfcpu:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "r08psfcpu", "vendor": "mitsubishielectric", "versions": [{"status": "affected", "version": "-"}]}, {"cpes": ["cpe:2.3:h:mitsubishielectric:r16psfcpu:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "r16psfcpu", "vendor": "mitsubishielectric", "versions": [{"status": "affected", "version": "-"}]}, {"cpes": ["cpe:2.3:h:mitsubishielectric:r32psfcpu:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "r32psfcpu", "vendor": "mitsubishielectric", "versions": [{"status": "affected", "version": "-"}]}, {"cpes": ["cpe:2.3:h:mitsubishielectric:r120psfcpu:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "r120psfcpu", "vendor": "mitsubishielectric", "versions": [{"status": "affected", "version": "-"}]}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:mitsubishielectric:r08sfcpu_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "66D3AC7B-50E0-47D5-B0D1-07329D724EFE", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:mitsubishielectric:r08sfcpu:-:*:*:*:*:*:*:*", "matchCriteriaId": "B185323A-C9E3-48A0-AD28-DA7AC7846E18", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:mitsubishielectric:r16sfcpu_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "AA81D5C7-46C8-4F0E-9550-D240DC0366F3", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:mitsubishielectric:r16sfcpu:-:*:*:*:*:*:*:*", "matchCriteriaId": "C4BBE066-33C4-4410-85D3-4B77B3773330", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:mitsubishielectric:r32sfcpu_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "7FB53D61-6C69-4A4A-92B1-C10D0B8F0EC9", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:mitsubishielectric:r32sfcpu:-:*:*:*:*:*:*:*", "matchCriteriaId": "6F6304BE-DAEE-49AB-B0B1-CEE6878CBECE", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:mitsubishielectric:r120sfcpu_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "8218130C-4E7D-4FB9-976B-2351977C82D4", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:mitsubishielectric:r120sfcpu:-:*:*:*:*:*:*:*", "matchCriteriaId": "515BDC46-5A1C-4A94-816A-B4751BB1B58D", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:mitsubishielectric:r08psfcpu_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "5A63D33D-302A-428C-986F-FC3F83CE9C86", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:mitsubishielectric:r08psfcpu:-:*:*:*:*:*:*:*", "matchCriteriaId": "EA37F2FC-8F75-4FEA-882D-87AD5CC1558E", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:mitsubishielectric:r16psfcpu_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "FFB42739-E503-44B2-A020-0DB2B8791A81", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:mitsubishielectric:r16psfcpu:-:*:*:*:*:*:*:*", "matchCriteriaId": "17AD5875-B7D7-498B-9484-23049753133E", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:mitsubishielectric:r32psfcpu_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "3B1F532B-8EAF-4E66-9AF5-5EEFF5A0BC23", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:mitsubishielectric:r32psfcpu:-:*:*:*:*:*:*:*", "matchCriteriaId": "0EC2594C-6067-40BA-B8B2-AEC9B9C7922F", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:mitsubishielectric:r120psfcpu_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "B2C03EA2-34BF-4F86-A19C-2818788E092B", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:mitsubishielectric:r120psfcpu:-:*:*:*:*:*:*:*", "matchCriteriaId": "CA3FB3E1-D7D3-424B-A207-D3C6F4365D12", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Cleartext Transmission of Sensitive InformationCleartext transmission of sensitive information vulnerability in MELSEC iQ-R series Safety CPU R08/16/32/120SFCPU firmware versions \"26\" and prior and MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU firmware versions \"11\" and prior allows a remote unauthenticated attacker to login to a target CPU module by obtaining credentials other than password."}, {"lang": "es", "value": "La vulnerabilidad de transmisi\u00f3n de texto claro de informaci\u00f3n sensible en las versiones de firmware \"26\" y anteriores de la CPU de seguridad R08/16/32/120SFCPU de la serie iQ-R de MELSEC y en la CPU de proceso SIL2 R08/16/32/120PSFCPU de la serie iQ-R de MELSEC, en todas sus versiones, permite que un atacante remoto no autenticado inicie sesi\u00f3n en un m\u00f3dulo de CPU objetivo obteniendo credenciales distintas de la contrase\u00f1a"}], "id": "CVE-2021-20599", "lastModified": "2026-06-17T03:34:05.783", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-20599", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2024-04-22T20:51:10.357119Z", "version": "2.0.3"}}]}, "published": "2021-10-14T15:15:08.827", "references": [{"source": "Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp", "tags": ["Third Party Advisory"], "url": "https://jvn.jp/vu/JVNVU98578731"}, {"source": "Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp", "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-287-03"}, {"source": "Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp", "tags": ["Vendor Advisory"], "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-011_en.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://jvn.jp/vu/JVNVU98578731"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-287-03"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-011_en.pdf"}], "sourceIdentifier": "Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-319"}], "source": "Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-639"}], "source": "nvd@nist.gov", "type": "Secondary"}]}
CVE record
NVD configurations
Red Hat packages
No data
OpenCVE enrichment
No data
EUVD