{
    "id": "CVE-2013-5211",
    "published": "2014-01-02 14:59:03",
    "last_modified": "2026-06-16 23:58:31",
    "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": "CWE-20",
    "description": "The monlist feature in ntp_request.c in ntpd in NTP before 4.2.7p26 allows remote attackers to cause a denial of service (traffic amplification) via forged (1) REQ_MON_GETLIST or (2) REQ_MON_GETLIST_1 requests, as exploited in the wild in December 2013.",
    "epss_score": "0.97549",
    "epss_percentile": "0.99900",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:19:04",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "ntp",
            "product": "ntp"
        },
        {
            "vendor": "opensuse",
            "product": "opensuse"
        },
        {
            "vendor": "oracle",
            "product": "linux"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "33073",
            "title": "NTP ntpd monlist Query Reflection - Denial of Service",
            "date": "2014-04-28",
            "url": "https://www.exploit-db.com/exploits/33073"
        }
    ],
    "refs_list": [
        "http://aix.software.ibm.com/aix/efixes/security/ntp_advisory.asc",
        "http://bugs.ntp.org/show_bug.cgi?id=1532",
        "http://ics-cert.us-cert.gov/advisories/ICSA-14-051-04",
        "http://lists.ntp.org/pipermail/pool/2011-December/005616.html",
        "http://lists.opensuse.org/opensuse-updates/2014-09/msg00031.html",
        "http://marc.info/?l=bugtraq&m=138971294629419&w=2",
        "http://marc.info/?l=bugtraq&m=144182594518755&w=2",
        "http://openwall.com/lists/oss-security/2013/12/30/6",
        "http://openwall.com/lists/oss-security/2013/12/30/7",
        "http://secunia.com/advisories/59288",
        "http://secunia.com/advisories/59726",
        "http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095861",
        "http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095892",
        "http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-dev/ntp-dev-4.2.7p26.tar.gz",
        "http://www.kb.cert.org/vuls/id/348126",
        "http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html",
        "http://www.securityfocus.com/bid/64692",
        "http://www.securitytracker.com/id/1030433",
        "http://www.us-cert.gov/ncas/alerts/TA14-013A",
        "https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04790232",
        "https://puppet.com/security/cve/puppetlabs-ntp-nov-2015-advisory",
        "http://aix.software.ibm.com/aix/efixes/security/ntp_advisory.asc",
        "http://bugs.ntp.org/show_bug.cgi?id=1532",
        "http://ics-cert.us-cert.gov/advisories/ICSA-14-051-04",
        "http://lists.ntp.org/pipermail/pool/2011-December/005616.html"
    ]
}