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SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\\\" & 15\\\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < V16 Update 4), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). SmartVNC has a heap allocation leak vulnerability in the device layout handler on client side, which could result in a Denial-of-Service condition."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-401: Missing Release of Memory after Effective Lifetime"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-27386", "STATE": "PUBLIC", "ASSIGNER": "productcert@siemens.com"}}}}, "cveMetadata": {"cveId": "CVE-2021-27386", "state": "PUBLISHED", "dateUpdated": "2026-06-02T19:06:47.812Z", "dateReserved": "2021-02-18T00:00:00.000Z", "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77", "datePublished": "2021-05-12T13:18:23.000Z", "assignerShortName": "siemens"}, "dataVersion": "5.2"}

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SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\\\" & 15\\\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < V16 Update 4), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). SmartVNC has a heap allocation leak vulnerability in the device layout handler on client side, which could result in a Denial-of-Service condition."}, {"lang": "es", "value": "Se ha identificado una vulnerabilidad en SIMATIC HMI Comfort Outdoor Panels V15 7\\\" &amp; 15\\\" (incluyendo las variantes SIPLUS) (Todas las versiones anteriores a V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\\\" &amp; 15\\\" (incluyendo las variantes SIPLUS) (Todas las versiones anteriores a V16 Update 4), SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incluyendo las variantes SIPLUS) (Todas las versiones anteriores a V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incluyendo las variantes SIPLUS) (Todas las versiones anteriores a V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (Todas las versiones anteriores a V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (Todas las versiones anteriores a V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (Todas las versiones anteriores a V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (Todas las versiones anteriores a V16 Update 4), SINAMICS GH150 (Todas las versiones), SINAMICS GL150 (con opci\u00f3n X30) (Todas las versiones), SINAMICS GM150 (con opci\u00f3n X30) (Todas las versiones), SINAMICS SH150 (Todas las versiones), SINAMICS SL150 (Todas las versiones), SINAMICS SM120 (Todas las versiones), SINAMICS SM150 (Todas las versiones), SINAMICS SM150i (Todas las versiones). SmartVNC presenta una vulnerabilidad de fuga de asignaci\u00f3n de la pila en el manejador de dise\u00f1o del dispositivo en el lado del cliente, lo que podr\u00eda resultar en una condici\u00f3n de Denegaci\u00f3n de Servicio"}], "id": "CVE-2021-27386", "lastModified": "2026-06-17T03:44:45.627", "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"}, {"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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-27386", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-02T19:06:43.362472Z", "version": "2.0.3"}}]}, "published": "2021-05-12T14:15:11.767", "references": [{"source": "productcert@siemens.com", "tags": ["Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf"}, {"source": "productcert@siemens.com", "tags": ["Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf"}, {"source": "productcert@siemens.com", "tags": ["Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf"}, {"source": "productcert@siemens.com", "tags": ["Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf"}, {"source": "productcert@siemens.com", "tags": ["Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf"}, {"source": "productcert@siemens.com", "tags": ["Vendor Advisory"], "url": 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