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CVE-2019-11694

Status: ModifiedHigh (7.5)—

A vulnerability exists in the Windows sandbox where an uninitialized value in memory can be leaked to a renderer from a broker when making a call to access an otherwise unavailable file. This results in the potential leaking of information stored at that memory location. *Note: this issue only occurs on Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

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 (2)

Mozilla — FirefoxMozilla — Thunderbird

CWEs

References

Raw JSON (NVD)

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  "id": "CVE-2019-11694",
  "cveTags": [],
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          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
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          "confidentialityImpact": "PARTIAL"
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          "confidentialityImpact": "HIGH"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "CWE-755"
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    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad en el entorno limitado de Windows sandbox donde un valor no inicializado en la memoria puede filtrarse a un procesador desde un intermediario cuando se realiza una llamada para acceder a un archivo que de otra manera no está disponible. Esto da como resultado la posible pérdida de información almacenada en esa ubicación de memoria. * Nota: este problema solo ocurre en Windows. Otros sistemas operativos no se ven afectados. *. Esta vulnerabilidad afecta a Thunderbird anterior a 60.7, Firefox anterior a 67 y Firefox ESR anterior a 60.7."
    }
  ],
  "lastModified": "2026-06-17T02:13:26.570",
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