{
    "id": "CVE-2021-20618",
    "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": "CWE-269",
    "description": "Privilege chaining vulnerability in acmailer ver. 4.0.2 and earlier, and acmailer DB ver. 1.1.4 and earlier allows remote attackers to bypass authentication and to gain an administrative privilege which may result in obtaining the sensitive information on the server via unspecified vectors.",
    "epss_score": "0.03336",
    "epss_percentile": "0.88330",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-10 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"
    ]
}