{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2022-48503",
  "revision": 1,
  "title": "Apple JavaScriptCore — missing bounds check to code execution",
  "summary": "A missing bounds check in Apple's JavaScript engine, fixed in Safari 15.6, iOS and iPadOS 15.6, macOS Monterey 12.5, tvOS 15.6 and watchOS 8.7, lets crafted web content run code. Some affected products are end-of-life.",
  "source_type": "cve",
  "severity": "high",
  "cvss": {
    "score": 8.8,
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
    "version": "3.1"
  },
  "epss": 0.03213,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": false,
    "attack_complexity": "low",
    "kev_added": "2025-10-20",
    "prerequisites": "The user must open attacker-controlled web content in an affected browser."
  },
  "remediation": {
    "patch_available": true,
    "fixed_in": [
      "Safari 15.6",
      "iOS 15.6",
      "iPadOS 15.6",
      "macOS Monterey 12.5",
      "tvOS 15.6",
      "watchOS 8.7"
    ]
  },
  "kill_chain": "execution",
  "recommended_action": "Update to Safari 15.6, iOS and iPadOS 15.6, macOS Monterey 12.5, tvOS 15.6 or watchOS 8.7 at minimum; retire devices that cannot reach those builds.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "references",
        "published_at"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2022-48503",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "exploitation.known_exploited",
        "exploitation.kev_added"
      ],
      "source": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2022-48503",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "title",
        "summary",
        "severity",
        "remediation",
        "mitre_attack",
        "kill_chain",
        "recommended_action",
        "confidence",
        "tags",
        "exploitation.prerequisites"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2022-48503",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48503",
      "label": "NVD record"
    },
    {
      "type": "cisa",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "label": "CISA Known Exploited Vulnerabilities catalog"
    },
    {
      "type": "vendor_advisory",
      "url": "https://support.apple.com/en-us/HT213340"
    },
    {
      "type": "vendor_advisory",
      "url": "https://support.apple.com/en-us/HT213341"
    },
    {
      "type": "vendor_advisory",
      "url": "https://support.apple.com/en-us/HT213342"
    }
  ],
  "published_at": "2023-08-14T23:15:10.490Z",
  "issued_at": "2026-09-24T08:51:39.744Z",
  "tags": [
    "apple",
    "javascriptcore",
    "safari",
    "legacy",
    "kev"
  ]
}