{
    "id": "CVE-1999-1109",
    "published": "1999-12-22 05:00:00",
    "last_modified": "2026-06-16 21:49:44",
    "cvss_score": "5.0",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
    "cwe": null,
    "description": "Sendmail before 8.10.0 allows remote attackers to cause a denial of service by sending a series of ETRN commands then disconnecting from the server, while Sendmail continues to process the commands after the connection has been terminated.",
    "epss_score": "0.07169",
    "epss_percentile": "0.94083",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-29 18:17:02",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "sendmail",
            "product": "sendmail"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "19701",
            "title": "Eric Allman Sendmail 8.9.1/8.9.3 - ETRN Denial of Service",
            "date": "1999-12-22",
            "url": "https://www.exploit-db.com/exploits/19701"
        }
    ],
    "refs_list": [
        "http://marc.info/?l=bugtraq&m=94632241202626&w=2",
        "http://marc.info/?l=bugtraq&m=94780566911948&w=2",
        "http://www.iss.net/security_center/static/7760.php",
        "http://www.securityfocus.com/bid/904",
        "http://marc.info/?l=bugtraq&m=94632241202626&w=2",
        "http://marc.info/?l=bugtraq&m=94780566911948&w=2",
        "http://www.iss.net/security_center/static/7760.php",
        "http://www.securityfocus.com/bid/904"
    ]
}