{
    "id": "CVE-2020-8515",
    "published": "2020-02-01 13:15:12",
    "last_modified": "2026-06-17 03:26:30",
    "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-78",
    "description": "DrayTek Vigor2960 1.3.1_Beta, Vigor3900 1.4.4_Beta, and Vigor300B 1.3.3_Beta, 1.4.2.1_Beta, and 1.4.4_Beta devices allow remote code execution as root (without authentication) via shell metacharacters to the cgi-bin/mainfunction.cgi URI. This issue has been fixed in Vigor3900/2960/300B v1.5.1.",
    "epss_score": "0.99993",
    "epss_percentile": "0.99987",
    "kev": 1,
    "kev_due": "2022-05-03",
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:25:20",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-05-03."
    },
    "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": {
        "cve_id": "CVE-2020-8515",
        "date_added": "2021-11-03",
        "due_date": "2022-05-03",
        "vendor": "DrayTek",
        "product": "Multiple Vigor Routers",
        "name": "Multiple DrayTek Vigor Routers Web Management Page Vulnerability",
        "ransomware": 0
    },
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "48268",
            "title": "Multiple DrayTek Products - Pre-authentication Remote Root Code Execution",
            "date": "2020-03-30",
            "url": "https://www.exploit-db.com/exploits/48268"
        }
    ],
    "refs_list": [
        "http://packetstormsecurity.com/files/156979/DrayTek-Vigor2960-Vigor3900-Vigor300B-Remote-Command-Execution.html",
        "https://sku11army.blogspot.com/2020/01/draytek-unauthenticated-rce-in-draytek.html",
        "https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-router-web-management-page-vulnerability-%28cve-2020-8515%29/",
        "http://packetstormsecurity.com/files/156979/DrayTek-Vigor2960-Vigor3900-Vigor300B-Remote-Command-Execution.html",
        "https://sku11army.blogspot.com/2020/01/draytek-unauthenticated-rce-in-draytek.html",
        "https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-router-web-management-page-vulnerability-%28cve-2020-8515%29/",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8515"
    ]
}