CVE-2019-11758
Estado: ModificadaAlta (8.8)—
Philipp, miembro de la comunidad de Mozilla, reportó un bug de seguridad de la memoria presente en Firefox versión 68 cuando 360 Total Security fue instalado. Este bug mostró evidencia de corrupción de memoria en el motor de accesibilidad y suponemos que con un esfuerzo suficiente podría ser explotado para ejecutar código arbitrario. Esta vulnerabilidad afecta a Firefox versiones anteriores a la versión 69, Thunderbird versiones anteriores a la versión 68.2 y Firefox ESR versiones anteriores a la versión 68.2.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.33%
- Percentil entre todas las CVEs puntuadas: 70
- Fecha de la puntuación: 7/10/2026
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 (4)
CWE
- CWE-787
Referencias
- https://bugzilla.mozilla.org/show_bug.cgi?id=1536227
- https://usn.ubuntu.com/4335-1/
- https://www.mozilla.org/security/advisories/mfsa2019-25/
- https://www.mozilla.org/security/advisories/mfsa2019-33/
- https://www.mozilla.org/security/advisories/mfsa2019-35/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1536227
- https://usn.ubuntu.com/4335-1/
- https://www.mozilla.org/security/advisories/mfsa2019-25/
- https://www.mozilla.org/security/advisories/mfsa2019-33/
- https://www.mozilla.org/security/advisories/mfsa2019-35/
JSON original (NVD)
Mostrar
{
"id": "CVE-2019-11758",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 6.8,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "MEDIUM",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 6.4,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 8.6,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": true
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 8.8,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "security@mozilla.org",
"affectedData": [
{
"vendor": "Mozilla",
"product": "Firefox",
"versions": [
{
"status": "affected",
"version": "before 69"
}
]
},
{
"vendor": "Mozilla",
"product": "Thunderbird",
"versions": [
{
"status": "affected",
"version": "before 68.2"
}
]
},
{
"vendor": "Mozilla",
"product": "Firefox ESR",
"versions": [
{
"status": "affected",
"version": "before 68.2"
}
]
}
]
}
],
"published": "2020-01-08T20:15:12.547",
"references": [
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1536227",
"tags": [
"Exploit",
"Issue Tracking",
"Vendor Advisory"
],
"source": "security@mozilla.org"
},
{
"url": "https://usn.ubuntu.com/4335-1/",
"tags": [
"Third Party Advisory"
],
"source": "security@mozilla.org"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2019-25/",
"tags": [
"Vendor Advisory"
],
"source": "security@mozilla.org"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2019-33/",
"tags": [
"Vendor Advisory"
],
"source": "security@mozilla.org"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2019-35/",
"tags": [
"Vendor Advisory"
],
"source": "security@mozilla.org"
},
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1536227",
"tags": [
"Exploit",
"Issue Tracking",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://usn.ubuntu.com/4335-1/",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2019-25/",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2019-33/",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2019-35/",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-787"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Mozilla community member Philipp reported a memory safety bug present in Firefox 68 when 360 Total Security was installed. This bug showed evidence of memory corruption in the accessibility engine and we presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Firefox < 69, Thunderbird < 68.2, and Firefox ESR < 68.2."
},
{
"lang": "es",
"value": "Philipp, miembro de la comunidad de Mozilla, reportó un bug de seguridad de la memoria presente en Firefox versión 68 cuando 360 Total Security fue instalado. Este bug mostró evidencia de corrupción de memoria en el motor de accesibilidad y suponemos que con un esfuerzo suficiente podría ser explotado para ejecutar código arbitrario. Esta vulnerabilidad afecta a Firefox versiones anteriores a la versión 69, Thunderbird versiones anteriores a la versión 68.2 y Firefox ESR versiones anteriores a la versión 68.2."
}
],
"lastModified": "2026-06-17T02:13:34.940",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "299AA921-46BD-4E9F-8D74-F304F44C6EB4",
"versionEndExcluding": "69.0"
},
{
"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "19FED95C-5BAF-4E31-8F60-E51609BA3BDB",
"versionEndExcluding": "68.2"
},
{
"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2CE97332-80EC-4CDF-A18C-37CD645A8A12",
"versionEndExcluding": "68.2"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "security@mozilla.org"
}