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CVE-2019-9790

Estado: ModificadaCrítica (9.8)—

Podría ocurrir una vulnerabilidad de uso después de liberación de memoria cuando es obtenido un puntero raw al elemento DOM en una página empleando JavaScript y el elemento es eliminado mientras sigue en uso. Esto resulta en un cierre inesperado potencialmente explotable. Esta vulnerabilidad afecta a Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

CVSS

Probabilidad de explotación (EPSS)

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 (2)

Mozilla — FirefoxMozilla — Thunderbird

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2019-9790",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
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          "version": "3.0",
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          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@mozilla.org",
      "affectedData": [
        {
          "vendor": "Mozilla",
          "product": "Thunderbird",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "60.6",
              "versionType": "custom"
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        {
          "vendor": "Mozilla",
          "product": "Firefox ESR",
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              "status": "affected",
              "version": "unspecified",
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          "vendor": "Mozilla",
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              "status": "affected",
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  ],
  "published": "2019-04-26T17:29:01.383",
  "references": [
    {
      "url": "https://access.redhat.com/errata/RHSA-2019:0966",
      "source": "security@mozilla.org"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2019:1144",
      "source": "security@mozilla.org"
    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1525145",
      "tags": [
        "Issue Tracking",
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        "Vendor Advisory"
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      "source": "security@mozilla.org"
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      "tags": [
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      "source": "security@mozilla.org"
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      "tags": [
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      "url": "https://www.mozilla.org/security/advisories/mfsa2019-11/",
      "tags": [
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    {
      "url": "https://access.redhat.com/errata/RHSA-2019:1144",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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        "Vendor Advisory"
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      "url": "https://www.mozilla.org/security/advisories/mfsa2019-08/",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A use-after-free vulnerability can occur when a raw pointer to a DOM element on a page is obtained using JavaScript and the element is then removed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66."
    },
    {
      "lang": "es",
      "value": "Podría ocurrir una vulnerabilidad de uso después de liberación de memoria cuando es obtenido un puntero raw al elemento DOM en una página empleando JavaScript y el elemento es eliminado mientras sigue en uso. Esto resulta en un cierre inesperado potencialmente explotable. Esta vulnerabilidad afecta a Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66."
    }
  ],
  "lastModified": "2026-06-17T02:44:20.910",
  "configurations": [
    {
      "nodes": [
        {
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  "sourceIdentifier": "security@mozilla.org"
}