{
    "id": "CVE-2018-8589",
    "published": "2018-11-14 01:29:02",
    "last_modified": "2026-06-17 02:05:09",
    "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": "An elevation of privilege vulnerability exists when Windows improperly handles calls to Win32k.sys, aka \"Windows Win32k Elevation of Privilege Vulnerability.\" This affects Windows Server 2008, Windows 7, Windows Server 2008 R2.",
    "epss_score": "0.03023",
    "epss_percentile": "0.86947",
    "kev": 1,
    "kev_due": "2022-06-13",
    "has_exploit": 0,
    "updated_at": "2026-09-27 18:17:22",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-06-13."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "windows_7"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2008"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2018-8589",
        "date_added": "2022-05-23",
        "due_date": "2022-06-13",
        "vendor": "Microsoft",
        "product": "Win32k",
        "name": "Microsoft Win32k Privilege Escalation Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "http://www.securityfocus.com/bid/105796",
        "http://www.securitytracker.com/id/1042140",
        "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8589",
        "http://www.securityfocus.com/bid/105796",
        "http://www.securitytracker.com/id/1042140",
        "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8589",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8589"
    ]
}