{
    "id": "CVE-2004-0847",
    "published": "2004-11-03 05:00:00",
    "last_modified": "2026-06-16 22:06:30",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-22",
    "description": "The Microsoft .NET forms authentication capability for ASP.NET allows remote attackers to bypass authentication for .aspx files in restricted directories via a request containing a (1) \"\\\" (backslash) or (2) \"%5C\" (encoded backslash), aka \"Path Validation Vulnerability.\"",
    "epss_score": "0.75702",
    "epss_percentile": "0.99508",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:14:24",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "asp.net"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "24666",
            "title": "Microsoft ASP.NET 1.x - URI Canonicalization Unauthorized Web Access",
            "date": "2004-10-06",
            "url": "https://www.exploit-db.com/exploits/24666"
        }
    ],
    "refs_list": [
        "http://archives.neohapsis.com/archives/ntbugtraq/2004-q3/0221.html",
        "http://sourceforge.net/mailarchive/forum.php?thread_id=5671607&forum_id=24754",
        "http://www.kb.cert.org/vuls/id/283646",
        "http://www.securityfocus.com/bid/11342",
        "http://www.us-cert.gov/cas/techalerts/TA05-039A.html",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2005/ms05-004",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/17644",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3556",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4987",
        "http://archives.neohapsis.com/archives/ntbugtraq/2004-q3/0221.html",
        "http://sourceforge.net/mailarchive/forum.php?thread_id=5671607&forum_id=24754",
        "http://www.kb.cert.org/vuls/id/283646",
        "http://www.securityfocus.com/bid/11342",
        "http://www.us-cert.gov/cas/techalerts/TA05-039A.html",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2005/ms05-004",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/17644",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3556",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4987"
    ]
}