{"api_version":"1","generated_at":"2026-04-23T02:36:26+00:00","cve":"CVE-2021-40368","urls":{"html":"https://cve.report/CVE-2021-40368","api":"https://cve.report/api/cve/CVE-2021-40368.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-40368","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-40368"},"summary":{"title":"CVE-2021-40368","description":"A vulnerability has been identified in  SIMATIC S7-400 CPU 412-1 DP V7 (All versions),  SIMATIC S7-400 CPU 412-2 DP V7 (All versions),  SIMATIC S7-400 CPU 412-2 PN/DP V7 (All versions < V7.0.3),  SIMATIC S7-400 CPU 414-2 DP V7 (All versions),  SIMATIC S7-400 CPU 414-3 DP V7 (All versions),  SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3),  SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3),  SIMATIC S7-400 CPU 416-2 DP V7 (All versions),  SIMATIC S7-400 CPU 416-3 DP V7 (All versions),  SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3),  SIMATIC S7-400 CPU 416F-2 DP V7 (All versions),  SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3),  SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.10), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (All versions < V10.1), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (All versions < V8.2.3), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). Affected devices improperly handle specially crafted packets sent to port 102/tcp.\n\nThis could allow an attacker to create a Denial-of-Service condition. A restart is needed to restore normal operations.","state":"PUBLIC","assigner":"productcert@siemens.com","published_at":"2022-04-12 09:15:00","updated_at":"2023-04-11 10:15:00"},"problem_types":["CWE-119"],"metrics":[],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-557541.pdf","name":"N/A","refsource":"CONFIRM","tags":[],"title":"","mime":"application/pdf","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-40368","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40368","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"40368","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"siemens","cpe5":"simatic_s7-400h_v6","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"40368","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"simatic_s7-400h_v6_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"40368","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"siemens","cpe5":"simatic_s7-400_pn\\/dp_v7","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"40368","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"simatic_s7-400_pn\\/dp_v7_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"40368","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"siemens","cpe5":"simatic_s7-410_v10","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"40368","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"simatic_s7-410_v10_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"40368","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"siemens","cpe5":"simatic_s7-410_v8","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"40368","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"simatic_s7-410_v8_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-40368","qid":"590853","title":"Siemens SIMATIC S7-400 Vulnerability (icsa-22-104-12) (ssa-557541)"}]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2021-40368","ASSIGNER":"productcert@siemens.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"A vulnerability has been identified in  SIMATIC S7-400 CPU 412-1 DP V7 (All versions),  SIMATIC S7-400 CPU 412-2 DP V7 (All versions),  SIMATIC S7-400 CPU 412-2 PN/DP V7 (All versions < V7.0.3),  SIMATIC S7-400 CPU 414-2 DP V7 (All versions),  SIMATIC S7-400 CPU 414-3 DP V7 (All versions),  SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3),  SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3),  SIMATIC S7-400 CPU 416-2 DP V7 (All versions),  SIMATIC S7-400 CPU 416-3 DP V7 (All versions),  SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3),  SIMATIC S7-400 CPU 416F-2 DP V7 (All versions),  SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3),  SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.10), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (All versions < V10.1), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (All versions < V8.2.3), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). Affected devices improperly handle specially crafted packets sent to port 102/tcp.\n\nThis could allow an attacker to create a Denial-of-Service condition. A restart is needed to restore normal operations."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer","cweId":"CWE-119"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"Siemens","product":{"product_data":[{"product_name":" SIMATIC S7-400 CPU 412-1 DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions"}]}},{"product_name":" SIMATIC S7-400 CPU 412-2 DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions"}]}},{"product_name":" SIMATIC S7-400 CPU 412-2 PN/DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V7.0.3"}]}},{"product_name":" SIMATIC S7-400 CPU 414-2 DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions"}]}},{"product_name":" SIMATIC S7-400 CPU 414-3 DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions"}]}},{"product_name":" SIMATIC S7-400 CPU 414-3 PN/DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V7.0.3"}]}},{"product_name":" SIMATIC S7-400 CPU 414F-3 PN/DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V7.0.3"}]}},{"product_name":" SIMATIC S7-400 CPU 416-2 DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions"}]}},{"product_name":" SIMATIC S7-400 CPU 416-3 DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions"}]}},{"product_name":" SIMATIC S7-400 CPU 416-3 PN/DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V7.0.3"}]}},{"product_name":" SIMATIC S7-400 CPU 416F-2 DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions"}]}},{"product_name":" SIMATIC S7-400 CPU 416F-3 PN/DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V7.0.3"}]}},{"product_name":" SIMATIC S7-400 CPU 417-4 DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions"}]}},{"product_name":"SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants)","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V6.0.10"}]}},{"product_name":"SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants)","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V10.1"}]}},{"product_name":"SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants)","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V8.2.3"}]}},{"product_name":"SIPLUS S7-400 CPU 414-3 PN/DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V7.0.3"}]}},{"product_name":"SIPLUS S7-400 CPU 416-3 PN/DP V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V7.0.3"}]}},{"product_name":"SIPLUS S7-400 CPU 416-3 V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions"}]}},{"product_name":"SIPLUS S7-400 CPU 417-4 V7","version":{"version_data":[{"version_affected":"=","version_value":"All versions"}]}}]}}]}},"references":{"reference_data":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-557541.pdf","refsource":"MISC","name":"https://cert-portal.siemens.com/productcert/pdf/ssa-557541.pdf"}]},"impact":{"cvss":[{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C","baseScore":7.5,"baseSeverity":"HIGH"}]}},"nvd":{"publishedDate":"2022-04-12 09:15:00","lastModifiedDate":"2023-04-11 10:15:00","problem_types":["CWE-119"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":5},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:siemens:simatic_s7-400h_v6_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"6.0.10","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:h:siemens:simatic_s7-400h_v6:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]},{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:siemens:simatic_s7-400_pn\\/dp_v7_firmware:*:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:h:siemens:simatic_s7-400_pn\\/dp_v7:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]},{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:siemens:simatic_s7-410_v8_firmware:*:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:h:siemens:simatic_s7-410_v8:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]},{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:siemens:simatic_s7-410_v10_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"10.1","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:h:siemens:simatic_s7-410_v10:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"40368","Ordinal":"216100","Title":"CVE-2021-40368","CVE":"CVE-2021-40368","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"40368","Ordinal":"1","NoteData":"** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.","Type":"Description","Title":null}]}}}