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A local malicious user with high privileges may potentially exploit this vulnerability, leading to a denial of Service, arbitrary code execution, or information disclosure in UEFI or BIOS Preboot Environment."}, {"lang": "es", "value": "Dell PowerEdge R640, R740, R740XD, R840, R940, R940xa, MX740c, MX840c, y T640 Server BIOS contienen una vulnerabilidad de desbordamiento del b\u00fafer en la regi\u00f3n stack de la memoria en sistemas con NVDIMM-N instalados. Un usuario local malicioso con privilegios elevados puede explotar potencialmente esta vulnerabilidad, conllevando a una denegaci\u00f3n de servicio, una ejecuci\u00f3n de c\u00f3digo arbitrario o una divulgaci\u00f3n de informaci\u00f3n en UEFI o BIOS Preboot Environment"}], "id": "CVE-2021-21555", "lastModified": "2026-06-17T03:35:46.290", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 0.6, "impactScore": 5.5, "source": "security_alert@emc.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-06-14T19:15:08.273", "references": [{"source": "security_alert@emc.com", "tags": ["Vendor Advisory"], "url": "https://www.dell.com/support/kbdoc/000187958"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.dell.com/support/kbdoc/000187958"}], "sourceIdentifier": "security_alert@emc.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "security_alert@emc.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}
CVE record
NVD configurations
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OpenCVE enrichment
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EUVD