CVE-2021-31840

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{"affected": [{"affectedData": [{"platforms": ["Windows"], "product": "McAfee Agent for Windows", "vendor": "McAfee,LLC", "versions": [{"lessThan": "5.7.3", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "trellixpsirt@trellix.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mcafee:mcafee_agent:*:*:*:*:*:windows:*:*", "matchCriteriaId": "3A8680F1-4C16-44EE-B130-BB3BBBF4E808", "versionEndExcluding": "5.7.3", "versionStartIncluding": "5.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the preloading mechanism of specific dynamic link libraries in McAfee Agent for Windows prior to 5.7.3 could allow an authenticated, local attacker to perform a DLL preloading attack with unsigned DLLs. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. This would result in the user gaining elevated permissions and being able to execute arbitrary code."}, {"lang": "es", "value": "Una vulnerabilidad en el mecanismo de precarga de determinadas bibliotecas de v\u00ednculos din\u00e1micos en McAfee Agent para Windows anterior a versi\u00f3n 5.7.3 podr\u00eda permitir a un atacante local autenticado llevar a cabo un ataque de precarga de DLL con DLL sin firmar. Para explotar esta vulnerabilidad, el atacante necesitar\u00eda tener credenciales v\u00e1lidas en el sistema Windows. Esto resultar\u00eda que el usuario consiguiera permisos elevados y poder ejecutar c\u00f3digo arbitrario"}], "id": "CVE-2021-31840", "lastModified": "2026-06-17T03:52:19.747", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.4, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.4, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 5.9, "source": "trellixpsirt@trellix.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-06-10T17:15:08.180", "references": [{"source": "trellixpsirt@trellix.com", "url": "https://kc.mcafee.com/corporate/index?page=content&id=SB10362"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://kc.mcafee.com/corporate/index?page=content&id=SB10362"}], "sourceIdentifier": "trellixpsirt@trellix.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-427"}], "source": "trellixpsirt@trellix.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-427"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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