{
    "id": "CVE-2024-21338",
    "published": "2024-02-13 18:15:49",
    "last_modified": "2026-08-10 16:18:40",
    "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": "CWE-822",
    "description": "Windows Kernel Elevation of Privilege Vulnerability",
    "epss_score": "0.59810",
    "epss_percentile": "0.99103",
    "kev": 1,
    "kev_due": "2024-03-25",
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:33:44",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2024-03-25."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "windows_10_1809"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_21h2"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_22h2"
        },
        {
            "vendor": "microsoft",
            "product": "windows_11_21h2"
        },
        {
            "vendor": "microsoft",
            "product": "windows_11_22h2"
        },
        {
            "vendor": "microsoft",
            "product": "windows_11_23h2"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2019"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2022"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2022_23h2"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2024-21338",
        "date_added": "2024-03-04",
        "due_date": "2024-03-25",
        "vendor": "Microsoft",
        "product": "Windows",
        "name": "Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability",
        "ransomware": 1
    },
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "52275",
            "title": "Microsoft Windows 11 - Kernel Privilege Escalation",
            "date": "2025-04-22",
            "url": "https://www.exploit-db.com/exploits/52275"
        },
        {
            "source": "exploit-db",
            "ref_id": "51946",
            "title": "Microsoft Windows 10.0.17763.5458 - Kernel Privilege Escalation",
            "date": "2024-04-02",
            "url": "https://www.exploit-db.com/exploits/51946"
        }
    ],
    "refs_list": [
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338",
        "https://decoded.avast.io/janvojtesek/lazarus-and-the-fudmodule-rootkit-beyond-byovd-with-an-admin-to-kernel-zero-day/",
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338",
        "https://packetstorm.news/files/id/190586/",
        "https://www.exploit-db.com/exploits/52275",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21338"
    ]
}