{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2023-42916",
  "revision": 1,
  "title": "Apple WebKit — a read past the end of a buffer",
  "summary": "Processing web content reads past the end of a buffer in WebKit and hands back whatever sat next to it. Apple fixed it in the same release as a code execution flaw and reports attacks on builds before iOS 16.7.1.",
  "source_type": "cve",
  "severity": "medium",
  "cvss": {
    "score": 6.5,
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
    "version": "3.1"
  },
  "epss": 0.17823,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": false,
    "attack_complexity": "low",
    "kev_added": "2023-12-04",
    "prerequisites": "The user must open attacker-controlled web content."
  },
  "remediation": {
    "patch_available": true,
    "fixed_in": [
      "iOS 17.1.2",
      "macOS Sonoma 14.1.2",
      "Safari 17.1.2"
    ]
  },
  "kill_chain": "collection",
  "recommended_action": "Update to iOS and iPadOS 17.1.2, macOS Sonoma 14.1.2 or Safari 17.1.2 — the same release also carries the code execution fix that shipped beside this one.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "references",
        "published_at"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2023-42916",
      "retrieved_at": "2026-09-24T12:52:19.575Z",
      "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": "2026-09-24T12:52:19.575Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2023-42916",
      "retrieved_at": "2026-09-24T12:52:19.575Z",
      "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-2023-42916",
      "retrieved_at": "2026-09-24T12:52:19.575Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42916",
      "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/HT214031"
    },
    {
      "type": "vendor_advisory",
      "url": "https://support.apple.com/en-us/HT214032"
    },
    {
      "type": "vendor_advisory",
      "url": "https://support.apple.com/en-us/HT214033"
    }
  ],
  "published_at": "2023-11-30T23:15:07.223Z",
  "issued_at": "2026-09-24T12:52:19.575Z",
  "tags": [
    "apple",
    "webkit",
    "safari",
    "ios",
    "information-disclosure",
    "kev"
  ]
}