{"api_version":"1","generated_at":"2026-04-22T22:50:00+00:00","cve":"CVE-2021-31340","urls":{"html":"https://cve.report/CVE-2021-31340","api":"https://cve.report/api/cve/CVE-2021-31340.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-31340","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-31340"},"summary":{"title":"CVE-2021-31340","description":"A vulnerability has been identified in SIMATIC RF166C (All versions > V1.1 and < V1.3.2), SIMATIC RF185C (All versions > V1.1 and < V1.3.2), SIMATIC RF186C (All versions > V1.1 and < V1.3.2), SIMATIC RF186CI (All versions > V1.1 and < V1.3.2), SIMATIC RF188C (All versions > V1.1 and < V1.3.2), SIMATIC RF188CI (All versions > V1.1 and < V1.3.2), SIMATIC RF360R (All versions < V2.0), SIMATIC Reader RF610R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF610R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF610R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF615R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF615R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF615R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF650R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF650R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF680R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF680R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF685R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF685R FCC (All versions > V3.0 < V4.0). Affected devices do not properly handle large numbers of incoming connections. An attacker may leverage this to cause a Denial-of-Service situation.","state":"PUBLIC","assigner":"productcert@siemens.com","published_at":"2021-06-08 20:15:00","updated_at":"2022-10-06 17:28:00"},"problem_types":["CWE-400"],"metrics":[],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdf","name":"https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdf","refsource":"MISC","tags":[],"title":"","mime":"application/pdf","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-31340","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31340","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"31340","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"siemens","cpe5":"simatic_reader_rf610r_cmiit","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"simatic_reader_rf610r_cmiit_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"siemens","cpe5":"simatic_reader_rf610r_etsi","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"simatic_reader_rf610r_etsi_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"siemens","cpe5":"simatic_reader_rf610r_fcc","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"simatic_reader_rf610r_fcc_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"siemens","cpe5":"simatic_reader_rf615r_cmiit","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"simatic_reader_rf615r_cmiit_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"siemens","cpe5":"simatic_reader_rf615r_etsi","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"simatic_reader_rf615r_etsi_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"siemens","cpe5":"simatic_reader_rf615r_fcc","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"simatic_reader_rf615r_fcc_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"siemens","cpe5":"simatic_reader_rf650r_arib","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"simatic_reader_rf650r_arib_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"siemens","cpe5":"simatic_reader_rf650r_cmiit","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"simatic_reader_rf650r_cmiit_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"siemens","cpe5":"simatic_reader_rf650r_etsi","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"simatic_reader_rf650r_etsi_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"31340","vulnerable":"-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SIMATIC RFID Vulnerability (ICSA-21-159-13)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"productcert@siemens.com","ID":"CVE-2021-31340","STATE":"PUBLIC"},"data_format":"MITRE","data_version":"4.0","data_type":"CVE","affects":{"vendor":{"vendor_data":[{"vendor_name":"Siemens","product":{"product_data":[{"product_name":"SIMATIC RF166C","version":{"version_data":[{"version_value":"All versions > V1.1 and < V1.3.2"}]}},{"product_name":"SIMATIC RF185C","version":{"version_data":[{"version_value":"All versions > V1.1 and < V1.3.2"}]}},{"product_name":"SIMATIC RF186C","version":{"version_data":[{"version_value":"All versions > V1.1 and < V1.3.2"}]}},{"product_name":"SIMATIC RF186CI","version":{"version_data":[{"version_value":"All versions > V1.1 and < V1.3.2"}]}},{"product_name":"SIMATIC RF188C","version":{"version_data":[{"version_value":"All versions > V1.1 and < V1.3.2"}]}},{"product_name":"SIMATIC RF188CI","version":{"version_data":[{"version_value":"All versions > 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V4.0"}]}},{"product_name":"SIMATIC Reader RF650R CMIIT","version":{"version_data":[{"version_value":"All versions > V3.0 < V4.0"}]}},{"product_name":"SIMATIC Reader RF650R ETSI","version":{"version_data":[{"version_value":"All versions > V3.0 < V4.0"}]}},{"product_name":"SIMATIC Reader RF650R FCC","version":{"version_data":[{"version_value":"All versions > V3.0 < V4.0"}]}},{"product_name":"SIMATIC Reader RF680R ARIB","version":{"version_data":[{"version_value":"All versions > V3.0 < V4.0"}]}},{"product_name":"SIMATIC Reader RF680R CMIIT","version":{"version_data":[{"version_value":"All versions > V3.0 < V4.0"}]}},{"product_name":"SIMATIC Reader RF680R ETSI","version":{"version_data":[{"version_value":"All versions > V3.0 < V4.0"}]}},{"product_name":"SIMATIC Reader RF680R FCC","version":{"version_data":[{"version_value":"All versions > V3.0 < V4.0"}]}},{"product_name":"SIMATIC Reader RF685R ARIB","version":{"version_data":[{"version_value":"All versions > V3.0 < V4.0"}]}},{"product_name":"SIMATIC Reader RF685R CMIIT","version":{"version_data":[{"version_value":"All versions > V3.0 < V4.0"}]}},{"product_name":"SIMATIC Reader RF685R ETSI","version":{"version_data":[{"version_value":"All versions > V3.0 < V4.0"}]}},{"product_name":"SIMATIC Reader RF685R FCC","version":{"version_data":[{"version_value":"All versions > V3.0 < V4.0"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-400: Uncontrolled Resource Consumption"}]}]},"description":{"description_data":[{"lang":"eng","value":"A vulnerability has been identified in SIMATIC RF166C (All versions > V1.1 and < V1.3.2), SIMATIC RF185C (All versions > V1.1 and < V1.3.2), SIMATIC RF186C (All versions > V1.1 and < V1.3.2), SIMATIC RF186CI (All versions > V1.1 and < V1.3.2), SIMATIC RF188C (All versions > V1.1 and < V1.3.2), SIMATIC RF188CI (All versions > V1.1 and < V1.3.2), SIMATIC RF360R (All versions < V2.0), SIMATIC Reader RF610R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF610R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF610R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF615R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF615R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF615R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF650R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF650R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF680R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF680R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF685R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF685R FCC (All versions > V3.0 < V4.0). Affected devices do not properly handle large numbers of incoming connections. An attacker may leverage this to cause a Denial-of-Service situation."}]},"references":{"reference_data":[{"refsource":"MISC","url":"https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdf","name":"https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdf"}]}},"nvd":{"publishedDate":"2021-06-08 20:15:00","lastModifiedDate":"2022-10-06 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vulnerability has been identified in SIMATIC RF166C (All versions > V1.1 and < V1.3.2), SIMATIC RF185C (All versions > V1.1 and < V1.3.2), SIMATIC RF186C (All versions > V1.1 and < V1.3.2), SIMATIC RF186CI (All versions > V1.1 and < V1.3.2), SIMATIC RF188C (All versions > V1.1 and < V1.3.2), SIMATIC RF188CI (All versions > V1.1 and < V1.3.2), SIMATIC RF360R (All versions), SIMATIC RF615R (All versions > V3.0), SIMATIC RF680R (All versions > V3.0), SIMATIC RF685R (All versions > V3.0). Affected devices do not properly handle large numbers of incoming connections. An attacker may leverage this to cause a Denial-of-Service situation.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"31340","Ordinal":"2","NoteData":"2021-06-08","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"31340","Ordinal":"3","NoteData":"2021-06-08","Type":"Other","Title":"Modified"}]}}}