CVE-2004-0847

Published: Oct 6, 2004Updated: Apr 16, 2026 Sources: CVE List NVDCWE-22

9.8CRITICAL

NVD MITRE

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."

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-22

Affected Products

microsoft

commercial·US

asp.netOn-prem

Operating Systems / windows

and 1 more affected products View all →

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Collection

Discovery

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References

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2005/ms05-004

docs.microsoft.com

http://sourceforge.net/mailarchive/forum.php?thread_id=5671607&forum_id=24754

sourceforge.net

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4987

oval.cisecurity.org

and 6 more references View all →

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