{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "SIMATIC CP 343-1 (incl. SIPLUS variants)", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions"}]}, {"defaultStatus": "unknown", "product": "SIMATIC CP 343-1 Advanced (incl. SIPLUS variants)", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions"}]}, {"defaultStatus": "unknown", "product": "SIMATIC CP 343-1 ERPC", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions"}]}, {"defaultStatus": "unknown", "product": "SIMATIC CP 343-1 Lean (incl. SIPLUS variants)", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions"}]}, {"defaultStatus": "unknown", "product": "SIMATIC CP 443-1", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V3.3"}]}, {"defaultStatus": "unknown", "product": "SIMATIC CP 443-1", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V3.3"}]}, {"defaultStatus": "unknown", "product": "SIMATIC CP 443-1 Advanced", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V3.3"}]}, {"defaultStatus": "unknown", "product": "SIPLUS NET CP 443-1", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V3.3"}]}, {"defaultStatus": "unknown", "product": "SIPLUS NET CP 443-1 Advanced", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V3.3"}]}], "source": "productcert@siemens.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:simatic_cp_343-1_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "611E1F0F-D55F-4F40-87A0-4783876182B0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:siemens:simatic_cp343-1:-:*:*:*:*:*:*:*", "matchCriteriaId": "F612E7D3-BA66-4E2D-AA23-E5DC2AAE4FE5", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:simatic_cp_343-1_advanced_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "794168D5-B763-42D4-9D31-55D284BFECE2", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:siemens:simatic_cp343-1_advanced:-:*:*:*:*:*:*:*", "matchCriteriaId": "ACCC0229-E454-4BEF-931A-3CD820500822", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:simatic_cp_343-1_erpc_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "368AFAB1-3B35-41E1-9EF6-F3826181A074", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:siemens:simatic_cp_343-1_erpc:*:*:*:*:*:*:*:*", "matchCriteriaId": "E5BDA5E4-9A6E-4C7B-9EE1-CB3D27EA960A", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:simatic_cp_343-1_lean_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "E3B76697-8D6F-4CBC-9333-561613CA0492", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:siemens:simatic_cp_343-1_lean:*:*:*:*:*:*:*:*", "matchCriteriaId": "78F8E868-DBAB-4BBC-A9FE-9EA97C5883DA", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:simatic_cp_443-1_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "88638890-5ABE-4824-A41F-FCF30532A538", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:siemens:simatic_cp_443-1:*:*:*:*:*:*:*:*", "matchCriteriaId": "733EA356-41B9-47E9-8E17-0988D84CCEF8", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:simatic_cp_443-1_advanced_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "5B01B39C-0039-4126-95F2-6F691C5158A0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:siemens:simatic_cp_443-1_advanced:*:*:*:*:*:*:*:*", "matchCriteriaId": "A2F03FF0-205F-4199-B2C3-8744F6BA4146", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability has been identified in SIMATIC CP 343-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 ERPC (All versions), SIMATIC CP 343-1 Lean (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 Advanced (All versions < V3.3), SIPLUS NET CP 443-1 (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (All versions < V3.3). Sending a specially crafted packet to port 102/tcp of an affected device could cause a denial of service condition. A restart is needed to restore normal operations."}, {"lang": "es", "value": "Se ha identificado una vulnerabilidad en SIMATIC CP 343-1 (incl. variantes SIPLUS) (Todas las versiones), SIMATIC CP 343-1 Advanced (incl. variantes SIPLUS) (Todas las versiones), SIMATIC CP 343-1 ERPC (Todas las versiones), SIMATIC CP 343-1 Lean (incl. variantes SIPLUS) SIPLUS) (Todas las versiones), SIMATIC CP 443-1 (incl. variantes SIPLUS) (Todas las versiones), SIMATIC CP 443-1 Advanced (Todas las versiones), SIMATIC CP 443-1 Advanced (incl. variantes SIPLUS) (Todas las versiones), SIPLUS NET CP 443-1 Advanced (Todas las versiones). El env\u00edo de un paquete especialmente dise\u00f1ado al puerto 102/tcp de un dispositivo afectado podr\u00eda causar una condici\u00f3n de denegaci\u00f3n de servicio. Se necesita un reinicio para restaurar las operaciones normales"}], "id": "CVE-2021-33737", "lastModified": "2026-06-17T03:55:08.007", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.8, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "productcert@siemens.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Secondary"}]}, "published": "2021-09-14T11:15:24.800", "references": [{"source": "productcert@siemens.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-549234.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-549234.pdf"}], "sourceIdentifier": "productcert@siemens.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "productcert@siemens.com", "type": "Secondary"}]}
Analysis
EUVD
MITRE
Vulnrichment
NVD
Redhat
OpenCVE Enrichment