{
    "id": "CVE-2021-20617",
    "published": "2021-01-14 09:15:13",
    "last_modified": "2026-06-17 03:34:07",
    "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": null,
    "description": "Improper access control vulnerability in acmailer ver. 4.0.1 and earlier, and acmailer DB ver. 1.1.3 and earlier allows remote attackers to execute an arbitrary OS command, or gain an administrative privilege which may result in obtaining the sensitive information on the server via unspecified vectors.",
    "epss_score": "0.07871",
    "epss_percentile": "0.94538",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-05 18:17:24",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "acmailer",
            "product": "acmailer"
        },
        {
            "vendor": "acmailer",
            "product": "acmailer_db"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://jvn.jp/en/jp/JVN35906450/index.html",
        "https://www.acmailer.jp/info/de.cgi?id=101",
        "https://jvn.jp/en/jp/JVN35906450/index.html",
        "https://www.acmailer.jp/info/de.cgi?id=101"
    ]
}