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CVE-2025-8039

Estado: ModificadaAlta (8.1)—

In some cases search terms persisted in the URL bar even after navigating away from the search page. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

UI:R (requiere interacción del usuario) → T1203 (explotación para ejecución en cliente). CWE-200 (exposición de información) y persistencia de términos de búsqueda en URL sugieren lectura de datos sensibles (T1005) al navegar.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Application Isolation and SandboxingExploit ProtectionUpdate SoftwareData Loss Prevention

Tecnologías afectadas (2)

Mozilla — FirefoxMozilla — Thunderbird

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2025-8039",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-8039",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-07-23T13:39:50.384748Z"
        }
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          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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  "affected": [
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      "affectedData": [
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  "published": "2025-07-22T21:15:51.060",
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      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1970997",
      "tags": [
        "Permissions Required"
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    },
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    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-61/",
      "tags": [
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    },
    {
      "lang": "es",
      "value": "En algunos casos, los términos de búsqueda persistían en la barra de URL incluso después de salir de la página de búsqueda. Esta vulnerabilidad afecta a Firefox menor que 141, Firefox ESR menor que 140.1, Thunderbird menor que 141 y Thunderbird menor que 140.1."
    }
  ],
  "lastModified": "2026-10-05T15:10:00.590",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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}