{
    "id": "CVE-2023-21554",
    "published": "2023-04-11 21:15:15",
    "last_modified": "2026-06-17 05:33:09",
    "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-20",
    "description": "Microsoft Message Queuing (MSMQ) Remote Code Execution Vulnerability",
    "epss_score": "0.95454",
    "epss_percentile": "0.99869",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-09-29 18:17:34",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 95.5% — above the 10% action threshold."
    },
    "products": [
        {
            "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_server_2008"
        },
        {
            "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": null,
    "exploits": [],
    "refs_list": [
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21554",
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21554"
    ]
}