{
    "id": "CVE-2021-30952",
    "published": "2021-08-24 19:15:21",
    "last_modified": "2026-06-17 03:51:12",
    "cvss_score": "7.8",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
    "cwe": "CWE-190",
    "description": "An integer overflow was addressed with improved input validation. 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.",
    "epss_score": "0.06964",
    "epss_percentile": "0.93907",
    "kev": 1,
    "kev_due": "2026-03-26",
    "has_exploit": 0,
    "updated_at": "2026-09-27 18:17:29",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2026-03-26."
    },
    "products": [
        {
            "vendor": "apple",
            "product": "ipados"
        },
        {
            "vendor": "apple",
            "product": "iphone_os"
        },
        {
            "vendor": "apple",
            "product": "macos"
        },
        {
            "vendor": "apple",
            "product": "safari"
        },
        {
            "vendor": "apple",
            "product": "tvos"
        },
        {
            "vendor": "apple",
            "product": "watchos"
        },
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "webkitgtk",
            "product": "webkitgtk"
        },
        {
            "vendor": "wpewebkit",
            "product": "wpe_webkit"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2021-30952",
        "date_added": "2026-03-05",
        "due_date": "2026-03-26",
        "vendor": "Apple",
        "product": "Multiple Products",
        "name": "Apple Multiple Products Integer Overflow or Wraparound Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "http://www.openwall.com/lists/oss-security/2022/01/21/2",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EQVZ3CEMTINLBZ7PBC7WRXVEVCRHNSM/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQKWD4BXRDD2YGR5AVU7H5J5PIQIEU6V/",
        "https://support.apple.com/en-us/HT212975",
        "https://support.apple.com/en-us/HT212976",
        "https://support.apple.com/en-us/HT212978",
        "https://support.apple.com/en-us/HT212980",
        "https://support.apple.com/en-us/HT212982",
        "https://www.debian.org/security/2022/dsa-5060",
        "https://www.debian.org/security/2022/dsa-5061",
        "http://www.openwall.com/lists/oss-security/2022/01/21/2",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EQVZ3CEMTINLBZ7PBC7WRXVEVCRHNSM/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQKWD4BXRDD2YGR5AVU7H5J5PIQIEU6V/",
        "https://support.apple.com/en-us/HT212975",
        "https://support.apple.com/en-us/HT212976",
        "https://support.apple.com/en-us/HT212978",
        "https://support.apple.com/en-us/HT212980",
        "https://support.apple.com/en-us/HT212982",
        "https://www.debian.org/security/2022/dsa-5060",
        "https://www.debian.org/security/2022/dsa-5061",
        "https://cloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exploit-kit",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30952"
    ]
}