{
    "id": "CVE-2012-4999",
    "published": "2012-09-19 19:55:08",
    "last_modified": "2026-06-16 23:46:02",
    "cvss_score": "6.1",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:A/AC:L/Au:N/C:N/I:N/A:C",
    "cwe": "CWE-20",
    "description": "Mercury MR804 Router 8.0 3.8.1 Build 101220 Rel.53006nB allows remote attackers to cause a denial of service (service hang) via a crafted string in HTTP header fields such as (1) If-Modified-Since, (2) If-None-Match, or (3) If-Unmodified-Since.  NOTE: some of these details are obtained from third party information.",
    "epss_score": "0.06558",
    "epss_percentile": "0.93599",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-30 18:17:11",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "mercurycom",
            "product": "mr804"
        },
        {
            "vendor": "mercurycom",
            "product": "mr804_firmware"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "36868",
            "title": "Mercury MR804 Router - Multiple HTTP Header Fields Denial of Service Vulnerabilities",
            "date": "2012-02-21",
            "url": "https://www.exploit-db.com/exploits/36868"
        }
    ],
    "refs_list": [
        "http://archives.neohapsis.com/archives/bugtraq/2012-02/0116.html",
        "http://secunia.com/advisories/48079",
        "http://www.securityfocus.com/bid/52106",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/73383",
        "http://archives.neohapsis.com/archives/bugtraq/2012-02/0116.html",
        "http://secunia.com/advisories/48079",
        "http://www.securityfocus.com/bid/52106",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/73383"
    ]
}