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CVE-2026-2801

Estado: ModificadaAlta (7.5)—

Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

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.

Vector CVSS AV:N/AC:L/PR:N/UI:N indica explotación remota sin requisitos (T1190). CWE-754 en WebAssembly/JavaScript permite alcanzar condición de negación de servicio (T1499.004).

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

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (2)

Mozilla — FirefoxMozilla — Thunderbird

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-2801",
  "cveTags": [],
  "metrics": {
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          "id": "CVE-2026-2801",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
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              "automatable": "yes"
            },
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              "technicalImpact": "partial"
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          ],
          "version": "2.0.3",
          "timestamp": "2026-02-26T20:04:41.050210Z"
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      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2009901",
      "tags": [
        "Permissions Required"
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      "source": "security@mozilla.org"
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      "url": "https://www.mozilla.org/security/advisories/mfsa2026-13/",
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  ],
  "lastModified": "2026-06-17T10:31:47.920",
  "configurations": [
    {
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