CVE-2020-5953
Estado: ModificadaAlta (7.5)—
A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that dereferences gRT (EFI_RUNTIME_SERVICES) pointer to call a GetVariable service, which is located outside of SMRAM. This can result in code execution in SMM (escalating privilege from ring 0 to ring -2).
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.28%
- Percentil entre todas las CVEs puntuadas: 19
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (17)
Insyde — Insydeh2oSiemens — Ruggedcom Ape1808 FirmwareSiemens — Simatic Field PG M5 FirmwareSiemens — Simatic Field PG M6 FirmwareSiemens — Simatic Ipc127e FirmwareSiemens — Simatic Ipc227g FirmwareSiemens — Simatic Ipc277g FirmwareSiemens — Simatic Ipc327g FirmwareSiemens — Simatic Ipc377g FirmwareSiemens — Simatic Ipc427e FirmwareSiemens — Simatic Ipc477e FirmwareSiemens — Simatic Ipc477e PRO FirmwareSiemens — Simatic Ipc627e FirmwareSiemens — Simatic Ipc647e FirmwareSiemens — Simatic Ipc677e FirmwareSiemens — Simatic Ipc847e FirmwareSiemens — Simatic Itp1000 Firmware
CWE
- NVD-CWE-noinfo
Referencias
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
- https://security.netapp.com/advisory/ntap-20220222-0005/
- https://www.insyde.com/products
- https://www.insyde.com/security-pledge
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
- https://security.netapp.com/advisory/ntap-20220222-0005/
- https://www.insyde.com/products
- https://www.insyde.com/security-pledge
- https://www.kb.cert.org/vuls/id/796611
- https://cert-portal.siemens.com/productcert/html/ssa-306654.html
JSON original (NVD)
Mostrar
{
"id": "CVE-2020-5953",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 6.9,
"accessVector": "LOCAL",
"vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
"authentication": "NONE",
"integrityImpact": "COMPLETE",
"accessComplexity": "MEDIUM",
"availabilityImpact": "COMPLETE",
"confidentialityImpact": "COMPLETE"
},
"acInsufInfo": false,
"impactScore": 10,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 3.4,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "HIGH",
"privilegesRequired": "HIGH",
"confidentialityImpact": "HIGH"
},
"impactScore": 6,
"exploitabilityScore": 0.8
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
},
{
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"affectedData": [
{
"vendor": "Siemens",
"product": "SIMATIC Field PG M5",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V22.01.10",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC Field PG M6",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V26.01.13",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC IPC127E",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V27.01.09",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC IPC227G",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V28.01.04",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC IPC277G",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V28.01.04",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC IPC277G PRO",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V28.01.04",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC IPC327G",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V28.01.04",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC IPC377G",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V28.01.04",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC IPC427E",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V21.01.17",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC IPC477E",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V21.01.17",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC IPC477E PRO",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V21.01.17",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC IPC627E",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V25.02.12",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC IPC647E",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V25.02.12",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC IPC677E",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V25.02.12",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC IPC847E",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V25.02.12",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC ITP1000",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V23.01.10",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIPLUS IPC427E",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V21.01.17",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2022-02-03T01:15:07.647",
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf",
"tags": [
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://security.netapp.com/advisory/ntap-20220222-0005/",
"tags": [
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://www.insyde.com/products",
"tags": [
"Product",
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://www.insyde.com/security-pledge",
"tags": [
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://security.netapp.com/advisory/ntap-20220222-0005/",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.insyde.com/products",
"tags": [
"Product",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.insyde.com/security-pledge",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.kb.cert.org/vuls/id/796611",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-306654.html",
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that dereferences gRT (EFI_RUNTIME_SERVICES) pointer to call a GetVariable service, which is located outside of SMRAM. This can result in code execution in SMM (escalating privilege from ring 0 to ring -2)."
},
{
"lang": "es",
"value": "Se presenta una vulnerabilidad en el manejador de Interrupciones de administración del Sistema (SWSMI) del código del Firmware UEFI de InsydeH2O ubicado en el manejador SWSMI que desreferencia el puntero gRT (EFI_RUNTIME_SERVICES) para llamar a un servicio GetVariable, que es encontrado fuera de la SMRAM. Esto puede resultar en una ejecución de código en SMM (escalando el privilegio del anillo 0 al anillo -2)"
}
],
"lastModified": "2026-08-11T13:17:18.953",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:insyde:insydeh2o:5.12.09.0074:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1506F007-8D5A-4F89-9C20-39C956E5E330"
},
{
"criteria": "cpe:2.3:a:insyde:insydeh2o:5.23.04.0045:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0D71B9DC-9A25-4395-9369-E746B0BCFAD5"
},
{
"criteria": "cpe:2.3:a:insyde:insydeh2o:5.23.45.0023:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DB7F094E-CE8C-44EB-AA8F-04FE034C0D02"
},
{
"criteria": "cpe:2.3:a:insyde:insydeh2o:5.33.15.0034:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7F636FC4-E44B-49ED-96E4-BF7187F3344C"
},
{
"criteria": "cpe:2.3:a:insyde:insydeh2o:5.34.03.0029:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D24FF36C-7E38-4EAA-80B2-299AF22619FF"
},
{
"criteria": "cpe:2.3:a:insyde:insydeh2o:5.42.03.0010:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "8822BCEE-BFF7-4691-A0F0-C2CB04BE2354"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:ruggedcom_ape1808_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "37FDCA69-9049-40B4-88AF-F476901022B6"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:ruggedcom_ape1808:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "B89A6863-B602-4404-8D26-337FECABFFF0"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_field_pg_m6_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "ECC5341D-9982-4F18-9C8D-2912DDB8EF9A"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_field_pg_m6:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "8F3C3E60-7C36-4F5D-B454-97C9D0FD9459"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_ipc127e_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "846EE524-BC53-4DE5-81C5-6B5EB2DD8BEA"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_ipc127e:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "F63C0B17-60E2-4240-92FD-4B7C7D8F2C8B"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_ipc227g_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2ED11E5B-E60C-4359-B87C-E373DED77677"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_ipc227g:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "0D1E85AC-1305-4C5E-AD8B-39B2654F6057"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_ipc277g_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1865061F-CF02-410B-B01B-2088F7104867"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_ipc277g:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "320F5752-86B3-4C08-89D0-02272753A6D0"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_itp1000_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "64538703-AE66-4D4A-B4A1-C88039B9543D"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_itp1000:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "187C6D51-5B86-484D-AE0F-26D1C9465580"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_ipc477e_pro_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6AD30972-8CE2-46B4-A4B8-B209F6B616AC"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_ipc477e_pro:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "3FC5CE20-7D08-4496-A857-C3A4BD0AB1AC"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_ipc627e_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EFFA7953-DC4C-489A-B5A4-B832FAF3C143"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_ipc627e:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "9D9AF082-8345-4BE1-B1FC-6E0316BB833B"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_ipc647e_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0AC414E9-5DBD-4D60-B0EA-6FB48207B628"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_ipc647e:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "E430C4C5-D887-47C6-B50F-66EEE9519151"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_ipc677e_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "193BF353-5D85-4F2E-94D0-329ED823FF07"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_ipc677e:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "5F9FA42D-B2F0-456F-89B7-6A5789787FBA"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_ipc847e_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D8CE311F-98F9-4E58-9E52-BAFAF87C0819"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_ipc847e:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "1157418C-14C4-43C4-B63E-7E98D868A94F"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_ipc327g_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "68215EEF-243A-4B02-BEAB-C162A3564D60"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_ipc327g:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "EC7303D1-CC95-42C7-B843-C3B3B3336669"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_ipc377g_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "62751FE8-48D7-4D7B-A7DD-4977DE539660"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_ipc377g:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "FDD6F034-BC50-4223-AE5D-319F04C866A8"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_ipc427e_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4EC3A82C-1380-4B21-BB17-3760A0B6A027"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_ipc427e:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "A40D0CDB-7BE6-491F-B730-3B4E10CA159A"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_ipc477e_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B2558478-44E0-4D42-A6DC-D4262D15A92A"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_ipc477e:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "FDF9D4C3-1892-48FA-95B4-835B636A4005"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_field_pg_m5_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "75AE72A3-05C6-4564-81CC-67865D03D106"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_field_pg_m5:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "506DEE00-30D2-4E29-9645-757EB8778C0F"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "cve@mitre.org"
}