{
    "id": "CVE-2002-0964",
    "published": "2002-10-04 04:00:00",
    "last_modified": "2026-06-16 21:58:28",
    "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": "Half-Life Server 1.1.1.0 and earlier allows remote attackers to cause a denial of service (resource exhaustion) via multiple responses to the initial challenge with different cd_key values, which reaches the player limit and prevents other players from connecting until the original responses have timed out.",
    "epss_score": "0.03155",
    "epss_percentile": "0.87537",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-05 18:17:03",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "valve_software",
            "product": "half-life"
        },
        {
            "vendor": "valve_software",
            "product": "half-life_dedicated_server"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "21572",
            "title": "Half-Life Server 1.1/3.1 - New Player Flood Denial of Service",
            "date": "2002-06-20",
            "url": "https://www.exploit-db.com/exploits/21572"
        }
    ],
    "refs_list": [
        "http://archives.neohapsis.com/archives/bugtraq/2002-06/0248.html",
        "http://www.iss.net/security_center/static/9412.php",
        "http://www.securityfocus.com/bid/5076",
        "http://archives.neohapsis.com/archives/bugtraq/2002-06/0248.html",
        "http://www.iss.net/security_center/static/9412.php",
        "http://www.securityfocus.com/bid/5076"
    ]
}