{
    "id": "CVE-2023-21674",
    "published": "2023-01-10 22:15:16",
    "last_modified": "2026-06-17 05:33:36",
    "cvss_score": "8.8",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
    "cwe": "CWE-416",
    "description": "Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability",
    "epss_score": "0.40987",
    "epss_percentile": "0.98616",
    "kev": 1,
    "kev_due": "2023-01-31",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:30:57",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2023-01-31."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "windows_10_1507"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1607"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1809"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_20h2"
        },
        {
            "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_rt_8.1"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2012"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2016"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2019"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2022"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2023-21674",
        "date_added": "2023-01-10",
        "due_date": "2023-01-31",
        "vendor": "Microsoft",
        "product": "Windows",
        "name": "Microsoft Windows Advanced Local Procedure Call (ALPC) Privilege Escalation Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21674",
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21674",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21674"
    ]
}