{
    "id": "CVE-2016-4121",
    "published": "2016-06-16 14:59:01",
    "last_modified": "2026-06-17 00:46:56",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-416",
    "description": "Use-after-free vulnerability in Adobe Flash Player before 18.0.0.352 and 19.x through 21.x before 21.0.0.242 on Windows and OS X and before 11.2.202.621 on Linux allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2016-1097, CVE-2016-1106, CVE-2016-1107, CVE-2016-1108, CVE-2016-1109, CVE-2016-1110, CVE-2016-4108, and CVE-2016-4110.",
    "epss_score": "0.10004",
    "epss_percentile": "0.95483",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-05 18:17:14",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 10% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "adobe",
            "product": "air_desktop_runtime"
        },
        {
            "vendor": "adobe",
            "product": "air_sdk"
        },
        {
            "vendor": "adobe",
            "product": "air_sdk_\\&_compiler"
        },
        {
            "vendor": "adobe",
            "product": "flash_player"
        },
        {
            "vendor": "adobe",
            "product": "flash_player_desktop_runtime"
        },
        {
            "vendor": "apple",
            "product": "iphone_os"
        },
        {
            "vendor": "apple",
            "product": "mac_os_x"
        },
        {
            "vendor": "google",
            "product": "android"
        },
        {
            "vendor": "google",
            "product": "chrome_os"
        },
        {
            "vendor": "linux",
            "product": "linux_kernel"
        },
        {
            "vendor": "microsoft",
            "product": "windows"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10"
        },
        {
            "vendor": "microsoft",
            "product": "windows_8.1"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://rhn.redhat.com/errata/RHSA-2016-1079.html",
        "http://www.securityfocus.com/bid/90797",
        "https://helpx.adobe.com/security/products/flash-player/apsb16-15.html",
        "https://security.gentoo.org/glsa/201606-08",
        "http://rhn.redhat.com/errata/RHSA-2016-1079.html",
        "http://www.securityfocus.com/bid/90797",
        "https://helpx.adobe.com/security/products/flash-player/apsb16-15.html",
        "https://security.gentoo.org/glsa/201606-08"
    ]
}