{
    "id": "CVE-2021-30900",
    "published": "2021-08-24 19:15:18",
    "last_modified": "2026-06-17 03:51:06",
    "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-787",
    "description": "An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 14.8.1 and iPadOS 14.8.1, iOS 15.1 and iPadOS 15.1. A malicious application may be able to execute arbitrary code with kernel privileges.",
    "epss_score": "0.05204",
    "epss_percentile": "0.92196",
    "kev": 1,
    "kev_due": "2023-04-20",
    "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 2023-04-20."
    },
    "products": [
        {
            "vendor": "apple",
            "product": "ipados"
        },
        {
            "vendor": "apple",
            "product": "iphone_os"
        },
        {
            "vendor": "apple",
            "product": "macos"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2021-30900",
        "date_added": "2023-03-30",
        "due_date": "2023-04-20",
        "vendor": "Apple",
        "product": "iOS, iPadOS, and macOS",
        "name": "Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://support.apple.com/en-us/HT212867",
        "https://support.apple.com/en-us/HT212868",
        "https://support.apple.com/kb/HT212872",
        "https://support.apple.com/en-us/HT212867",
        "https://support.apple.com/en-us/HT212868",
        "https://support.apple.com/kb/HT212872",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30900"
    ]
}