{
    "id": "CVE-2003-0567",
    "published": "2003-08-18 04:00:00",
    "last_modified": "2026-06-16 22:02:26",
    "cvss_score": "7.8",
    "cvss_severity": "HIGH",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
    "cwe": "CWE-20",
    "description": "Cisco IOS 11.x and 12.0 through 12.2 allows remote attackers to cause a denial of service (traffic block) by sending a particular sequence of IPv4 packets to an interface on the device, causing the input queue on that interface to be marked as full.",
    "epss_score": "0.16576",
    "epss_percentile": "0.96918",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-30 18:17:03",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "cisco",
            "product": "ios"
        },
        {
            "vendor": "cisco",
            "product": "ons_15454_optical_transport_platform"
        },
        {
            "vendor": "cisco",
            "product": "optical_networking_systems_software"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "62",
            "title": "Cisco IOS - using hping Remote Denial of Service",
            "date": "2003-07-22",
            "url": "https://www.exploit-db.com/exploits/62"
        },
        {
            "source": "exploit-db",
            "ref_id": "60",
            "title": "Cisco IOS - 'cisco-bug-44020.c' IPv4 Packet Denial of Service",
            "date": "2003-07-21",
            "url": "https://www.exploit-db.com/exploits/60"
        },
        {
            "source": "exploit-db",
            "ref_id": "59",
            "title": "Cisco IOS - IPv4 Packets Denial of Service",
            "date": "2003-07-18",
            "url": "https://www.exploit-db.com/exploits/59"
        }
    ],
    "refs_list": [
        "http://lists.grok.org.uk/pipermail/full-disclosure/2003-July/006743.html",
        "http://www.cert.org/advisories/CA-2003-15.html",
        "http://www.cert.org/advisories/CA-2003-17.html",
        "http://www.cisco.com/warp/public/707/cisco-sa-20030717-blocked.shtml",
        "http://www.kb.cert.org/vuls/id/411332",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5603",
        "http://lists.grok.org.uk/pipermail/full-disclosure/2003-July/006743.html",
        "http://www.cert.org/advisories/CA-2003-15.html",
        "http://www.cert.org/advisories/CA-2003-17.html",
        "http://www.cisco.com/warp/public/707/cisco-sa-20030717-blocked.shtml",
        "http://www.kb.cert.org/vuls/id/411332",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5603"
    ]
}