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CVE-2020-12405

Estado: ModificadaMedia (5.3)—

When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.

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 (4)

Canonical — Ubuntu LinuxMozilla — FirefoxMozilla — Firefox ESRMozilla — Thunderbird

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2020-12405",
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
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          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
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          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H",
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          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
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          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
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      "affectedData": [
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  "published": "2020-07-09T15:15:10.943",
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  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-362"
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        {
          "lang": "en",
          "value": "CWE-416"
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      "lang": "en",
      "value": "When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9."
    },
    {
      "lang": "es",
      "value": "Cuando se navega una página maliciosa, podría ocurrir una condición de carrera en nuestro SharedWorkerService y conllevar a un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 68.9.0, Firefox versiones anteriores a 77 y Firefox ESR versiones anteriores a 68.9"
    }
  ],
  "lastModified": "2026-06-17T02:51:46.380",
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