CVE-2019-8503

Estado: ModificadaAlta (8.8)—

A logic issue was addressed with improved validation. This issue is fixed in iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. A malicious website may be able to execute scripts in the context of another website.

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: 1.78%
Percentil entre todas las CVEs puntuadas: 78
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 (5)

Apple — Icloud Apple — Iphone OS Apple — Itunes Apple — Safari Apple — Tvos

CWE

CWE-20

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2019-8503",
  "cveTags": [],
  "metrics": {
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      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 9.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
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    "cvssMetricV31": [
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        "type": "Primary",
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        "cvssData": {
          "scope": "UNCHANGED",
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "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
      }
    ]
  },
  "affected": [
    {
      "source": "product-security@apple.com",
      "affectedData": [
        {
          "vendor": "Apple",
          "product": "iOS",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "iOS 12.2",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Apple",
          "product": "tvOS",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "tvOS 12.2",
              "versionType": "custom"
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        {
          "vendor": "Apple",
          "product": "Safari",
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              "status": "affected",
              "version": "unspecified",
              "lessThan": "Safari 12.1",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Apple",
          "product": "iTunes for Windows",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "iTunes 12.9.4 for Windows",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Apple",
          "product": "iCloud for Windows",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "iCloud for Windows 7.11",
              "versionType": "custom"
            }
          ]
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      ]
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  ],
  "published": "2019-12-18T18:15:22.630",
  "references": [
    {
      "url": "https://support.apple.com/HT209599",
      "tags": [
        "Vendor Advisory"
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      "source": "product-security@apple.com"
    },
    {
      "url": "https://support.apple.com/HT209601",
      "tags": [
        "Vendor Advisory"
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      "source": "product-security@apple.com"
    },
    {
      "url": "https://support.apple.com/HT209603",
      "tags": [
        "Vendor Advisory"
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      "source": "product-security@apple.com"
    },
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      "url": "https://support.apple.com/HT209604",
      "tags": [
        "Vendor Advisory"
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      "source": "product-security@apple.com"
    },
    {
      "url": "https://support.apple.com/HT209605",
      "tags": [
        "Vendor Advisory"
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      "source": "product-security@apple.com"
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    {
      "url": "https://support.apple.com/HT209599",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://support.apple.com/HT209601",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://support.apple.com/HT209603",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "url": "https://support.apple.com/HT209604",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://support.apple.com/HT209605",
      "tags": [
        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A logic issue was addressed with improved validation. This issue is fixed in iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. A malicious website may be able to execute scripts in the context of another website."
    },
    {
      "lang": "es",
      "value": "Un problema lógico fue abordado con una comprobación mejorada. Este problema es corregido en iOS versión 12.2, tvOS versión 12.2, Safari versión 12.1, iTunes versión 12.9.4 para Windows, iCloud para Windows versión 7.11. Un sitio web malicioso puede ejecutar scripts en el contexto de otro sitio web."
    }
  ],
  "lastModified": "2026-06-17T02:42:02.780",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "matchCriteriaId": "98912716-69F2-4372-98F0-BD6CCA9AAEB9",
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          ],
          "operator": "OR"
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  ],
  "sourceIdentifier": "product-security@apple.com"
}