CVE-2020-1914

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{"affected": [{"affectedData": [{"product": "Hermes", "vendor": "Facebook", "versions": [{"status": "affected", "version": "commit prior to b2021df620824627f5a8c96615edbd1eb7fdddfc"}]}], "source": "cve-assign@fb.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:facebook:hermes:*:*:*:*:*:*:*:*", "matchCriteriaId": "0B207EF9-C6DF-4130-9607-BF7D986FE1AA", "versionEndExcluding": "2020-10-01", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A logic vulnerability when handling the SaveGeneratorLong instruction in Facebook Hermes prior to commit b2021df620824627f5a8c96615edbd1eb7fdddfc allows attackers to potentially read out of bounds or theoretically execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected."}, {"lang": "es", "value": "Una vulnerabilidad l\u00f3gica al manejar la instrucci\u00f3n SaveGeneratorLong en Facebook Hermes antes del commit b2021df620824627f5a8c96615edbd1eb7fdddfc, permite a atacantes leer potencialmente fuera de l\u00edmites o, te\u00f3ricamente, ejecutar c\u00f3digo arbitrario por medio de JavaScript dise\u00f1ado. Tome en cuenta que esto solo es explotable si la aplicaci\u00f3n que utiliza Hermes permite una evaluaci\u00f3n de un JavaScript que no es confiable. Por lo tanto, la mayor\u00eda de las aplicaciones React Native no est\u00e1n afectadas"}], "id": "CVE-2020-1914", "lastModified": "2026-06-17T03:02:36.357", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-10-08T19:15:12.080", "references": [{"source": "cve-assign@fb.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/facebook/hermes/commit/b2021df620824627f5a8c96615edbd1eb7fdddfc"}, {"source": "cve-assign@fb.com", "tags": ["Vendor Advisory"], "url": "https://www.facebook.com/security/advisories/cve-2020-1914"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/facebook/hermes/commit/b2021df620824627f5a8c96615edbd1eb7fdddfc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.facebook.com/security/advisories/cve-2020-1914"}], "sourceIdentifier": "cve-assign@fb.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-670"}], "source": "cve-assign@fb.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-670"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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