{
    "id": "CVE-2021-33266",
    "published": "2021-12-01 22:15:07",
    "last_modified": "2026-06-17 03:54:24",
    "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-787",
    "description": "D-Link DIR-809 devices with firmware through DIR-809Ax_FW1.12WWB03_20190410 were discovered to contain a stack buffer overflow vulnerability in the function FUN_8004776c in /formVirtualApp. This vulnerability is triggered via a crafted POST request.",
    "epss_score": "0.16873",
    "epss_percentile": "0.96969",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-03 18:17:29",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 16.9% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "dlink",
            "product": "dir-809"
        },
        {
            "vendor": "dlink",
            "product": "dir-809_firmware"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln04",
        "https://www.dlink.com/en/security-bulletin/",
        "https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln04",
        "https://www.dlink.com/en/security-bulletin/"
    ]
}