{
  "id": "CVE-2023-42917",
  "url": "https://spydr.io/cve/CVE-2023-42917",
  "published": "2023-11-30T23:15:07.280Z",
  "modified": "2026-06-17T06:24:49.733Z",
  "score": 8.8,
  "severity": "high",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
  "score_source": "NVD",
  "epss": 0.09295,
  "epss_percentile": 0.95243,
  "exploited": true,
  "kev": {
    "added": "2023-12-04",
    "due": "2023-12-25",
    "action": "Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.",
    "ransomware": "Unknown",
    "name": "Apple Multiple Products WebKit Memory Corruption Vulnerability",
    "notes": "https://support.apple.com/en-us/HT214031, https://support.apple.com/en-us/HT214032, https://support.apple.com/en-us/HT214033 ; https://nvd.nist.gov/vuln/detail/CVE-2023-42917"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Apple"
  ],
  "products": [
    "Apple Safari",
    "Apple macOS",
    "Apple iOS and iPadOS"
  ],
  "cwes": [
    "CWE-787"
  ],
  "description": "A memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 8.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "http://seclists.org/fulldisclosure/2023/Dec/12",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    },
    {
      "url": "http://seclists.org/fulldisclosure/2023/Dec/13",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    },
    {
      "url": "http://seclists.org/fulldisclosure/2023/Dec/3",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    },
    {
      "url": "http://seclists.org/fulldisclosure/2023/Dec/4",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    },
    {
      "url": "http://seclists.org/fulldisclosure/2023/Dec/5",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    },
    {
      "url": "http://seclists.org/fulldisclosure/2023/Dec/8",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    },
    {
      "url": "http://seclists.org/fulldisclosure/2024/Jan/35",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2023/12/05/1",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AD2KIHHCUBQC2YYH3FJWAHI5BG3QETOH/",
      "tags": [
        "Mailing List"
      ]
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P5LQS6VEI7VIZNC7QGQ62EOV45R5RJIR/",
      "tags": [
        "Mailing List"
      ]
    },
    {
      "url": "https://security.gentoo.org/glsa/202401-04",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://support.apple.com/en-us/HT214031",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://support.apple.com/en-us/HT214032",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://support.apple.com/en-us/HT214033",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://support.apple.com/kb/HT214033",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://support.apple.com/kb/HT214034",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://support.apple.com/kb/HT214062",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.debian.org/security/2023/dsa-5575",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-42917",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42917",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}