CVE-2021-30951

Estado: ModificadaAlta (8.8)—
A use after free issue was addressed with improved memory management. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.
CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Puntuación base: 8.8
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 2.02%
Percentil entre todas las CVEs puntuadas: 80
Fecha de la puntuación: 7/10/2026
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 (8)

Apple — Ipados Apple — Iphone OS Apple — Macos Apple — Safari Apple — Tvos Apple — Watchos Debian — Debian Linux Fedoraproject — Fedora
CWE

CWE-416
Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2021-30951",
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "impactScore": 6.4,
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        "exploitabilityScore": 8.6,
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  "published": "2021-08-24T19:15:21.683",
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      "value": "A use after free issue was addressed with improved memory management. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution."
    },
    {
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      "value": "Se abordó un problema de uso de memoria previamente liberada con una administración de la memoria mejorada.&#xa0;Este problema es corregido en tvOS versión 15.2, macOS Monterey versión 12.1, Safari versión 15.2, iOS versión 15.2 e iPadOS versión 15.2, watchOS versión 8.3.&#xa0;El procesamiento de contenido web creado con fines maliciosos puede conllevar a una ejecución de código arbitrario"
    }
  ],
  "lastModified": "2026-06-17T03:51:11.947",
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