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CVE-2019-11764

Status: ModifiedHigh (8.8)—

Mozilla developers and community members reported memory safety bugs present in Firefox 69 and Firefox ESR 68.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (4)

Canonical — Ubuntu LinuxMozilla — FirefoxMozilla — Firefox ESRMozilla — Thunderbird

CWEs

References

Raw JSON (NVD)

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  "id": "CVE-2019-11764",
  "cveTags": [],
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          "authentication": "NONE",
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    },
    {
      "lang": "es",
      "value": "Los desarrolladores de Mozilla y los miembros de la comunidad reportaron bugs de seguridad de memoria presentes en Firefox versión 69 y Firefox ESR versión 68.1. Algunos de estos errores mostraron evidencia de corrupción de memoria y suponemos que con un esfuerzo suficiente algunos de estos podrían ser explotados para ejecutar código arbitrario. Esta vulnerabilidad afecta a Firefox versiones anteriores a la versión  70, Thunderbird versiones anteriores 68.2 y Firefox ESR versiones anteriores a la versión  68.2."
    }
  ],
  "lastModified": "2026-06-17T02:13:35.713",
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