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CVE-2019-9818

Estado: ModificadaAlta (8.3)—

Se presenta una condición de carrera en el servidor de generación de bloqueo utilizado para generar datos por el reportero de bloqueo. Este problema puede conllevar a un uso de la memoria previamente liberada en el proceso principal, lo que resulta en un bloqueo explotable potencialmente y un escape del sandbox. * Nota: esta vulnerabilidad solo afecta a Windows. Otros sistemas operativos no están afectados. *. Esta vulnerabilidad afecta a Thunderbird anterior a versión 60.7, Firefox anterior a versión 67 y Firefox ESR anterior a versión 60.7.

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 (3)

Mozilla — FirefoxMozilla — Firefox ESRMozilla — Thunderbird

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2019-9818",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.1,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "HIGH",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 4.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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          "scope": "CHANGED",
          "version": "3.1",
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
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          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 6,
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  "affected": [
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      "affectedData": [
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          "vendor": "Mozilla",
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  "published": "2019-07-23T14:15:17.280",
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      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1542581",
      "tags": [
        "Issue Tracking",
        "Permissions Required"
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      "source": "security@mozilla.org"
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    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2019-13/",
      "tags": [
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        },
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
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      "lang": "en",
      "value": "A race condition is present in the crash generation server used to generate data for the crash reporter. This issue can lead to a use-after-free in the main process, resulting in a potentially exploitable crash and a sandbox escape. *Note: this vulnerability only affects Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7."
    },
    {
      "lang": "es",
      "value": "Se presenta una condición de carrera en el servidor de generación de bloqueo utilizado para generar datos por el reportero de bloqueo. Este problema puede conllevar a un uso de la memoria previamente liberada en el proceso principal, lo que resulta en un bloqueo explotable potencialmente y un escape del sandbox. * Nota: esta vulnerabilidad solo afecta a Windows. Otros sistemas operativos no están afectados. *. Esta vulnerabilidad afecta a Thunderbird anterior a versión 60.7, Firefox anterior a versión 67 y Firefox ESR anterior a versión 60.7."
    }
  ],
  "lastModified": "2026-06-17T02:44:39.767",
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