CVE-2004-0847

critical Microsoft
CVSS v3 Base Score
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
52.8%
Exploitation probability in 30 days
Top 2% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: November 3, 2004 (7862 days ago)
Last Modified: April 16, 2026
Vendor: Microsoft
Source: NVD

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."

CWE

CWE-22

Affected Products

microsoft asp.net

References

🔗 archives.neohapsis.com 🔗 sourceforge.net 🔗 www.kb.cert.org 🔗 www.securityfocus.com 🔗 www.us-cert.gov