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CVE-2025-6431

Estado: ModificadaMedia (6.5)—

When a link can be opened in an external application, Firefox for Android will, by default, prompt the user before doing so. An attacker could have bypassed this prompt, potentially exposing the user to security vulnerabilities or privacy leaks in external applications. *This bug only affects Firefox for Android. Other versions of Firefox are unaffected.*. This vulnerability was fixed in Firefox 140.

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 (1)

Mozilla — Firefox

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2025-6431",
  "cveTags": [],
  "metrics": {
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          "id": "CVE-2025-6431",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
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              "automatable": "no"
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          "version": "2.0.3",
          "timestamp": "2025-06-25T12:33:35.223114Z"
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          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
        "exploitabilityScore": 2.8
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  "affected": [
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      "source": "security@mozilla.org",
      "affectedData": [
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          "product": "Firefox",
          "versions": [
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  "published": "2025-06-24T13:15:24.103",
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    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1942716",
      "tags": [
        "Permissions Required"
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      "source": "security@mozilla.org"
    },
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      "url": "https://www.mozilla.org/security/advisories/mfsa2025-51/",
      "tags": [
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  "vulnStatus": "Modified",
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      "lang": "en",
      "value": "When a link can be opened in an external application, Firefox for Android will, by default, prompt the user before doing so. An attacker could have bypassed this prompt, potentially exposing the user to security vulnerabilities or privacy leaks in external applications. \n*This bug only affects Firefox for Android. Other versions of Firefox are unaffected.*. This vulnerability was fixed in Firefox 140."
    },
    {
      "lang": "es",
      "value": "Cuando se puede abrir un enlace en una aplicación externa, Firefox para Android, por defecto, pregunta al usuario antes de hacerlo. Un atacante podría haber omitido esta pregunta, exponiendo al usuario a vulnerabilidades de seguridad o filtraciones de privacidad en aplicaciones externas. Este error solo afecta a Firefox para Android. Las demás versiones de Firefox no se ven afectadas.* Esta vulnerabilidad afecta a Firefox anteriores a la versión 140."
    }
  ],
  "lastModified": "2026-09-30T18:10:00.190",
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