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    CVE-2004-0847

    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."

    Published:Oct 6, 2004
    Last Modified:Apr 16, 2026
    EPS:Oct 6, 2004
    EPSS Score:0.52826
    CVSS Score:9.8

    Affected Products

    Vendor
    Microsoft
    Product
    Asp.net

    Exploits

    http://archives.neohapsis.com/archives/ntbugtraq/2004-q3/0221.htmlhttp://archives.neohapsis.com/archives/ntbugtraq/2004-q3/0221.htmlhttps://www.exploit-db.com/exploits/24666

    Related CVEs

    CVE-2010-2084 (CVSS 4.3) — Microsoft ASP.NET 2.0 does not prevent setting the InnerHtml property on a control that inherits from HtmlCont…
    CVE-2010-2088 (CVSS 4.3) — ASP.NET in Microsoft .NET 3.5 does not properly handle an unencrypted view state, which allows remote attacker…
    CVE-2006-1364 (CVSS 7.5) — Microsoft w3wp (aka w3wp.exe) does not properly handle when the AspCompat directive is not used when referenci…
    CVE-2005-2224 (CVSS 5) — aspnet_wp.exe in Microsoft ASP.NET web services allows remote attackers to cause a denial of service (CPU cons…
    CVE-2005-1665 (CVSS 5) — The __VIEWSTATE functionality in Microsoft ASP.NET 1.x, when not cryptographically signed, allows remote attac…
    CVE-2005-1664 (CVSS 6.4) — The __VIEWSTATE functionality in Microsoft ASP.NET 1.x allows remote attackers to conduct replay attacks to (1…
    CVE-2005-0452 (CVSS 4.3) — Multiple cross-site scripting (XSS) vulnerabilities in Microsoft ASP.NET (.Net) 1.0 and 1.1 to SP1 allow remot…
    CVE-2003-0768 (CVSS 6.8) — Microsoft ASP.Net 1.1 allows remote attackers to bypass the Cross-Site Scripting (XSS) and Script Injection pr…

    References

    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High