Critical severity9.8NVD Advisory· Published Nov 3, 2004· Updated Jun 16, 2026
CVE-2004-0847
CVE-2004-0847
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."
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Affected products
3Patches
Vulnerability mechanics
References
9- archives.neohapsis.com/archives/ntbugtraq/2004-q3/0221.htmlnvdExploitVendor Advisory
- www.kb.cert.org/vuls/id/283646nvdThird Party AdvisoryUS Government Resource
- www.securityfocus.com/bid/11342nvdThird Party AdvisoryVDB Entry
- www.us-cert.gov/cas/techalerts/TA05-039A.htmlnvdThird Party AdvisoryUS Government Resource
- exchange.xforce.ibmcloud.com/vulnerabilities/17644nvdThird Party AdvisoryVDB Entry
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3556nvdThird Party Advisory
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4987nvdThird Party Advisory
- sourceforge.net/mailarchive/forum.phpnvdBroken Link
- docs.microsoft.com/en-us/security-updates/securitybulletins/2005/ms05-004nvd
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