TI-2004-00784 Aliases CVE-2004-0847 GHSA-wxfc-g96x-mm56

The Microsoft .NET forms authentication capability for ASP.NET allows remote attackers to…

HIGH 81CWE-22Published 2004-10-06 · Updated 2024-08-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

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."

Why it matters now

EPSS 0.75702 99th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:microsoft:asp.net::::::::	up to 1.1	Vulnerable	Microsoft
cpe:2.3:a:microsoft:asp.net:1.1:sp1::::::	1.1 sp1	Vulnerable	Microsoft

cpe:2.3:a:microsoft:asp.net:*:*:*:*:*:*:*:* Versions up to 1.1 Vulnerable ·Microsoft
cpe:2.3:a:microsoft:asp.net:1.1:sp1:*:*:*:*:*:* Versions 1.1 sp1 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2004-0847
2026-10-03 Alias added: GHSA-wxfc-g96x-mm56

References

Exploit 1

20040914 Security bug in .NET Forms Authentication

Advisory 5

Other 1

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

TI-2006-01318 Microsoft w3wp (aka w3wp.exe) does not properly handle when the AspCompat directive is… CVSS 3.0HIGH 7.5
TI-2005-01574 The __VIEWSTATE functionality in Microsoft ASP.NET 1.x, when not cryptographically… CVSS 2.0MEDIUM 5.0
TI-2005-01573 The __VIEWSTATE functionality in Microsoft ASP.NET 1.x allows remote attackers to conduct… CVSS 2.0MEDIUM 6.4
TI-2003-00711 Microsoft ASP.Net 1.1 allows remote attackers to bypass the Cross-Site Scripting (XSS)… CVSS 2.0MEDIUM 6.8
TI-2005-02103 aspnet_wp.exe in Microsoft ASP.NET web services allows remote attackers to cause a denial… CVSS 2.0MEDIUM 5.0
TI-2005-00410 Multiple cross-site scripting (XSS) vulnerabilities in Microsoft ASP.NET (.Net) 1.0 and… CVSS 2.0MEDIUM 4.3

See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences