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CVE-2024-7521

Estado: AnalizadaAlta (8.8)—

Incomplete WebAssembly exception handing could have led to a use-after-free. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, Firefox ESR < 128.1, Thunderbird < 128.1, and Thunderbird < 115.14.

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 (3)

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2024-7521",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-7521",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-08-06T13:47:49.424097Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      },
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        "type": "Secondary",
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        "cvssData": {
          "scope": "UNCHANGED",
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          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
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          "availabilityImpact": "HIGH",
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          "confidentialityImpact": "HIGH"
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          "versions": [
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        {
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          "product": "Firefox ESR",
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          "vendor": "Mozilla",
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              "version": "unspecified",
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          ],
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          "product": "firefox_esr",
          "versions": [
            {
              "status": "affected",
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            },
            {
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              "version": "0",
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          "vendor": "mozilla",
          "product": "thunderbird",
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  "published": "2024-08-06T13:15:57.167",
  "references": [
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1904644",
      "tags": [
        "Issue Tracking",
        "Permissions Required"
      ],
      "source": "security@mozilla.org"
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2024-33/",
      "tags": [
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      "source": "security@mozilla.org"
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      "url": "https://www.mozilla.org/security/advisories/mfsa2024-34/",
      "tags": [
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      "source": "security@mozilla.org"
    },
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      "url": "https://www.mozilla.org/security/advisories/mfsa2024-35/",
      "tags": [
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      "source": "security@mozilla.org"
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2024-37/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@mozilla.org"
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2024-38/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@mozilla.org"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-755"
        }
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    },
    {
      "type": "Secondary",
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      "description": [
        {
          "lang": "en",
          "value": "CWE-755"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Incomplete WebAssembly exception handing could have led to a use-after-free. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, Firefox ESR < 128.1, Thunderbird < 128.1, and Thunderbird < 115.14."
    },
    {
      "lang": "es",
      "value": "La gestión incompleta de excepciones de WebAssembly podría haber dado lugar a un use-after-free. Esta vulnerabilidad afecta a Firefox &lt; 129, Firefox ESR &lt; 115.14, Firefox ESR &lt; 128.1, Thunderbird &lt; 128.1 y Thunderbird &lt; 115.14."
    }
  ],
  "lastModified": "2026-06-17T08:20:22.067",
  "configurations": [
    {
      "nodes": [
        {
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          "cpeMatch": [
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              "matchCriteriaId": "12C9ABF7-3B44-4C24-B152-488DCF9E2D39",
              "versionEndExcluding": "129.0"
            },
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}