{
    "id": "CVE-2009-2479",
    "published": "2009-07-16 15:30:00",
    "last_modified": "2026-06-16 23:09:32",
    "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-119",
    "description": "Mozilla Firefox 3.0.x, 3.5, and 3.5.1 on Windows allows remote attackers to cause a denial of service (uncaught exception and application crash) via a long Unicode string argument to the write method. NOTE: this was originally reported as a stack-based buffer overflow. NOTE: on Linux and Mac OS X, a crash resulting from this long string reportedly occurs in an operating-system library, not in Firefox.",
    "epss_score": "0.12089",
    "epss_percentile": "0.96033",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-03 18:17:09",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "mozilla",
            "product": "firefox"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "9158",
            "title": "Mozilla Firefox 3.5 - Unicode Remote Buffer Overflow (PoC)",
            "date": "2009-07-15",
            "url": "https://www.exploit-db.com/exploits/9158"
        }
    ],
    "refs_list": [
        "http://blog.mozilla.com/security/2009/07/19/milw0rm-9158-stack-overflow-crash-not-exploitable-cve-2009-2479/",
        "http://osvdb.org/55931",
        "http://websecurity.com.ua/3338/",
        "http://www.exploit-db.com/exploits/9158",
        "http://www.securityfocus.com/archive/1/505092/100/0/threaded",
        "http://www.securityfocus.com/bid/35707",
        "http://www.securitytracker.com/id?1022580",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=504342",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=504343",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/51729",
        "https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00909.html",
        "http://blog.mozilla.com/security/2009/07/19/milw0rm-9158-stack-overflow-crash-not-exploitable-cve-2009-2479/",
        "http://osvdb.org/55931",
        "http://websecurity.com.ua/3338/",
        "http://www.exploit-db.com/exploits/9158",
        "http://www.securityfocus.com/archive/1/505092/100/0/threaded",
        "http://www.securityfocus.com/bid/35707",
        "http://www.securitytracker.com/id?1022580",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=504342",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=504343",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/51729",
        "https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00909.html"
    ]
}