{
    "id": "CVE-2016-3309",
    "published": "2016-08-09 21:59:16",
    "last_modified": "2026-06-17 00:45:28",
    "cvss_score": "7.8",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "cwe": null,
    "description": "The kernel-mode drivers in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; Windows 7 SP1; Windows 8.1; Windows Server 2012 Gold and R2; Windows RT 8.1; and Windows 10 Gold, 1511, and 1607 allow local users to gain privileges via a crafted application, aka \"Win32k Elevation of Privilege Vulnerability,\" a different vulnerability than CVE-2016-3308, CVE-2016-3310, and CVE-2016-3311.",
    "epss_score": "0.20467",
    "epss_percentile": "0.97426",
    "kev": 1,
    "kev_due": "2022-04-05",
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:20:40",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-04-05."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "windows_10_1507"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1511"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1607"
        },
        {
            "vendor": "microsoft",
            "product": "windows_7"
        },
        {
            "vendor": "microsoft",
            "product": "windows_8.1"
        },
        {
            "vendor": "microsoft",
            "product": "windows_rt_8.1"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2008"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2012"
        },
        {
            "vendor": "microsoft",
            "product": "windows_vista"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2016-3309",
        "date_added": "2022-03-15",
        "due_date": "2022-04-05",
        "vendor": "Microsoft",
        "product": "Windows",
        "name": "Microsoft Windows Kernel Privilege Escalation Vulnerability",
        "ransomware": 1
    },
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "42960",
            "title": "Microsoft Windows 10 RS2 (x64) - 'win32kfull!bFill' Pool Overflow",
            "date": "2017-10-06",
            "url": "https://www.exploit-db.com/exploits/42960"
        }
    ],
    "refs_list": [
        "http://www.securityfocus.com/bid/92297",
        "http://www.securitytracker.com/id/1036572",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-098",
        "https://www.exploit-db.com/exploits/42960/",
        "http://www.securityfocus.com/bid/92297",
        "http://www.securitytracker.com/id/1036572",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-098",
        "https://www.exploit-db.com/exploits/42960/",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-3309"
    ]
}