{
    "id": "CVE-2020-14993",
    "published": "2020-06-23 12:15:13",
    "last_modified": "2026-06-17 02:55:53",
    "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": "A stack-based buffer overflow on DrayTek Vigor2960, Vigor3900, and Vigor300B devices before 1.5.1.1 allows remote attackers to execute arbitrary code via the formuserphonenumber parameter in an authusersms action to mainfunction.cgi.",
    "epss_score": "0.05544",
    "epss_percentile": "0.92611",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-06 18:17:22",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "draytek",
            "product": "vigor2960"
        },
        {
            "vendor": "draytek",
            "product": "vigor2960_firmware"
        },
        {
            "vendor": "draytek",
            "product": "vigor300b"
        },
        {
            "vendor": "draytek",
            "product": "vigor300b_firmware"
        },
        {
            "vendor": "draytek",
            "product": "vigor3900"
        },
        {
            "vendor": "draytek",
            "product": "vigor3900_firmware"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://github.com/dexterone/Vigor-poc",
        "https://www.draytek.com/about/security-advisory",
        "https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-stack-based-buffer-overflow-vulnerability-%28cve-2020-14473%29",
        "https://github.com/dexterone/Vigor-poc",
        "https://www.draytek.com/about/security-advisory",
        "https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-stack-based-buffer-overflow-vulnerability-%28cve-2020-14473%29"
    ]
}