CVE-2021-33720

{"containers": {"cna": {"affected": [{"product": "SIPROTEC 5 relays with CPU variants CP050", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V8.80"}]}, {"product": "SIPROTEC 5 relays with CPU variants CP100", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V8.80"}]}, {"product": "SIPROTEC 5 relays with CPU variants CP300", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V8.80"}]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP300 (All versions < V8.80). Specially crafted packets sent to port 4443/tcp could cause a Denial-of-Service condition."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-120", "description": "CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-10-12T09:49:22.000Z", "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77", "shortName": "siemens"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-847986.pdf"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "productcert@siemens.com", "ID": "CVE-2021-33720", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "SIPROTEC 5 relays with CPU variants CP050", "version": {"version_data": [{"version_value": "All versions < V8.80"}]}}, {"product_name": "SIPROTEC 5 relays with CPU variants CP100", "version": {"version_data": [{"version_value": "All versions < V8.80"}]}}, {"product_name": "SIPROTEC 5 relays with CPU variants CP300", "version": {"version_data": [{"version_value": "All versions < V8.80"}]}}]}, "vendor_name": "Siemens"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP300 (All versions < V8.80). Specially crafted packets sent to port 4443/tcp could cause a Denial-of-Service condition."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"}]}]}, "references": {"reference_data": [{"name": "https://cert-portal.siemens.com/productcert/pdf/ssa-847986.pdf", "refsource": "MISC", "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-847986.pdf"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T23:58:22.902Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-847986.pdf"}]}]}, "cveMetadata": {"assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77", "assignerShortName": "siemens", "cveId": "CVE-2021-33720", "datePublished": "2021-09-14T10:47:36.000Z", "dateReserved": "2021-05-28T00:00:00.000Z", "dateUpdated": "2024-08-03T23:58:22.902Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "SIPROTEC 5 relays with CPU variants CP050", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V8.80"}]}, {"product": "SIPROTEC 5 relays with CPU variants CP100", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V8.80"}]}, {"product": "SIPROTEC 5 relays with CPU variants CP300", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V8.80"}]}], "source": "productcert@siemens.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:siprotec_5_with_cpu_variant_cp050:*:*:*:*:*:*:*:*", "matchCriteriaId": "9755644C-32A9-468D-A7AD-D12B8C1924D9", "versionEndExcluding": "8.80", "vulnerable": true}, {"criteria": "cpe:2.3:o:siemens:siprotec_5_with_cpu_variant_cp100:*:*:*:*:*:*:*:*", "matchCriteriaId": "27B5603D-CA86-440D-9CBE-A6F50AA1ADE1", "versionEndExcluding": "8.80", "vulnerable": true}, {"criteria": "cpe:2.3:o:siemens:siprotec_5_with_cpu_variant_cp300:*:*:*:*:*:*:*:*", "matchCriteriaId": "23382FCC-10D8-4DEC-A6B1-9B39D8988299", "versionEndExcluding": "8.80", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP300 (All versions < V8.80). Specially crafted packets sent to port 4443/tcp could cause a Denial-of-Service condition."}, {"lang": "es", "value": "Se ha identificado una vulnerabilidad en los rel\u00e9s SIPROTEC 5 con variantes de CPU CP050 (Todas las versiones anteriores a V8.80), rel\u00e9s SIPROTEC 5 con variantes de CPU CP100 (Todas las versiones anteriores a V8.80), rel\u00e9s SIPROTEC 5 con variantes de CPU CP300 (Todas las versiones anteriores a V8.80). Los paquetes especialmente dise\u00f1ados enviados al puerto 4443/tcp podr\u00edan causar una condici\u00f3n de denegaci\u00f3n de servicio"}], "id": "CVE-2021-33720", "lastModified": "2026-06-17T03:55:06.260", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "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": "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": "Primary"}]}, "published": "2021-09-14T11:15:24.540", "references": [{"source": "productcert@siemens.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-847986.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-847986.pdf"}], "sourceIdentifier": "productcert@siemens.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-120"}], "source": "productcert@siemens.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-120"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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