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CVE-2025-4084

Estado: ModificadaMedia (5.7)—

Due to insufficient escaping of the special characters in the "copy as cURL" feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system. *This bug only affects Firefox for Windows. Other versions of Firefox are unaffected.*. This vulnerability was fixed in Firefox ESR 128.10, Firefox ESR 115.23, and Thunderbird 128.10.

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 (2)

Mozilla — FirefoxMozilla — Thunderbird

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-4084",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-4084",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-04-30T03:56:30.292026Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.7,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.1
      }
    ]
  },
  "affected": [
    {
      "source": "security@mozilla.org",
      "affectedData": [
        {
          "vendor": "Mozilla",
          "product": "Firefox",
          "versions": [
            {
              "status": "unaffected",
              "version": "115.23",
              "versionType": "rpm",
              "lessThanOrEqual": "115.*"
            },
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              "status": "unaffected",
              "version": "128.10",
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        },
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          "vendor": "Mozilla",
          "product": "Thunderbird",
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              "version": "128.10",
              "versionType": "rpm",
              "lessThanOrEqual": "*"
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  ],
  "published": "2025-04-29T14:15:35.097",
  "references": [
    {
      "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1949994%2C1956698%2C1960198",
      "tags": [
        "Broken Link"
      ],
      "source": "security@mozilla.org"
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-29/",
      "tags": [
        "Vendor Advisory"
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      "source": "security@mozilla.org"
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-30/",
      "tags": [
        "Vendor Advisory"
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      "source": "security@mozilla.org"
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-32/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@mozilla.org"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00022.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-116"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Due to insufficient escaping of the special characters in the \"copy as cURL\" feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system.\n*This bug only affects Firefox for Windows. Other versions of Firefox are unaffected.*. This vulnerability was fixed in Firefox ESR 128.10, Firefox ESR 115.23, and Thunderbird 128.10."
    },
    {
      "lang": "es",
      "value": "Debido a la insuficiente capacidad de escape de los caracteres especiales en la función “copiar como cURL”, un atacante podría engañar a un usuario para que use este comando, lo que podría provocar la ejecución de código local en su sistema. Este error solo afecta a Firefox para Windows. Las demás versiones de Firefox no se ven afectadas.* Esta vulnerabilidad afecta a Firefox ESR menor que 128.10, Firefox ESR menor que 115.23 y Thunderbird ESR menor que 128.10."
    }
  ],
  "lastModified": "2026-10-05T15:10:00.590",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "C120A37E-1333-4278-9527-4F370BC78EA8",
              "versionEndExcluding": "115.23"
            },
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              "vulnerable": true,
              "matchCriteriaId": "78457AB7-7F72-41FA-99F5-EE6D2B2AC9F9",
              "versionEndExcluding": "128.10",
              "versionStartIncluding": "128.0"
            },
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              "criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DC19822B-CC07-4C6F-BAAD-C7A9C4E73FA9",
              "versionEndExcluding": "128.10.0"
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  "sourceIdentifier": "security@mozilla.org"
}