{
    "id": "CVE-2007-4391",
    "published": "2007-08-17 22:17:00",
    "last_modified": "2026-06-16 22:43:59",
    "cvss_score": "9.3",
    "cvss_severity": "HIGH",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
    "cwe": "CWE-20",
    "description": "Heap-based buffer overflow in Kakadu kdu_v32m.dll in Yahoo! Messenger 8.1.0.413 allows remote attackers to cause a denial of service (application crash) via a certain length field in JPEG2000 data, as demonstrated by sending an \"invite to view my webcam\" request, and then injecting a DLL into the attacker's peer Yahoo! Messenger application when this request is accepted.",
    "epss_score": "0.09314",
    "epss_percentile": "0.95239",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-03 18:17:07",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "yahoo",
            "product": "messenger"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "4335",
            "title": "Yahoo! Messenger 8.1.0.413 - 'webcam' Remote Crash",
            "date": "2007-08-29",
            "url": "https://www.exploit-db.com/exploits/4335"
        },
        {
            "source": "exploit-db",
            "ref_id": "30500",
            "title": "Yahoo! Messenger 8.1 - 'KDU_V32M.DLL' Remote Denial of Service",
            "date": "2007-08-15",
            "url": "https://www.exploit-db.com/exploits/30500"
        }
    ],
    "refs_list": [
        "http://osvdb.org/38221",
        "http://secunia.com/advisories/26501",
        "http://www.avertlabs.com/research/blog/index.php/2007/08/15/more-on-the-yahoo-messenger-webcam-0day/",
        "http://www.kb.cert.org/vuls/id/515968",
        "http://www.securityfocus.com/bid/25330",
        "http://www.securitytracker.com/id?1018586",
        "http://www.team509.com/expyahoo.rar",
        "http://www.vupen.com/english/advisories/2007/2917",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/36115",
        "https://www.xfocus.net/bbs/index.php?act=ST&f=2&t=64639&page=1#entry321749",
        "http://osvdb.org/38221",
        "http://secunia.com/advisories/26501",
        "http://www.avertlabs.com/research/blog/index.php/2007/08/15/more-on-the-yahoo-messenger-webcam-0day/",
        "http://www.kb.cert.org/vuls/id/515968",
        "http://www.securityfocus.com/bid/25330",
        "http://www.securitytracker.com/id?1018586",
        "http://www.team509.com/expyahoo.rar",
        "http://www.vupen.com/english/advisories/2007/2917",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/36115",
        "https://www.xfocus.net/bbs/index.php?act=ST&f=2&t=64639&page=1#entry321749"
    ]
}