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Vulnerability record · CVE-2005-1665 · published 18 May 2005

CVE-2005-1665: Microsoft asp.net vulnerability

Microsoft · Asp.Net

The __VIEWSTATE functionality in Microsoft ASP.NET 1.x, when not cryptographically signed, allows remote attackers to cause a denial of service (CPU consumption) via deeply nested markup.

5.0 CVSS 2.0 Medium EPSS 40% · top 1.4%
5.0CVSS 2.0 base score
40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
16 Jun 2026Last modified by NVD

Description

The __VIEWSTATE functionality in Microsoft ASP.NET 1.x, when not cryptographically signed, allows remote attackers to cause a denial of service (CPU consumption) via deeply nested markup.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://marc.info/?l=bugtraq&m=111513127704270&w=2
http://scottonwriting.net/sowblog/posts/3747.aspx Vendor Advisory
http://secunia.com/advisories/15241 Vendor Advisory
http://www.osvdb.org/16195
https://exchange.xforce.ibmcloud.com/vulnerabilities/20408
http://marc.info/?l=bugtraq&m=111513127704270&w=2
http://scottonwriting.net/sowblog/posts/3747.aspx Vendor Advisory
http://secunia.com/advisories/15241 Vendor Advisory
http://www.osvdb.org/16195
https://exchange.xforce.ibmcloud.com/vulnerabilities/20408

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2004-0847ASP.NET forms authentication bypass via backslash path traversalASP.NET forms authentication can be bypassed for .aspx files in restricted directories by sending a request containing a backslash or its encoded for…EPSS 76%analysed7.5CVE-2006-1364Microsoft ASP.NET w3wp COM component handling denial of serviceMicrosoft w3wp.exe mishandles requests for ASP.NET documents that reference COM components without the AspCompat directive, leading to uncontrolled r…EPSS 59%analysed6.8CVE-2003-0768Microsoft asp.net vulnerabilityMicrosoft ASP.Net 1.1 allows remote attackers to bypass the Cross-Site Scripting (XSS) and Script Injection protection feature via a null character i…EPSS 13%6.4CVE-2005-1664Microsoft asp.net vulnerabilityThe __VIEWSTATE functionality in Microsoft ASP.NET 1.x allows remote attackers to conduct replay attacks to (1) apply a ViewState generated from one …EPSS 19%5.0CVE-2005-2224Microsoft asp.net vulnerabilityaspnet_wp.exe in Microsoft ASP.NET web services allows remote attackers to cause a denial of service (CPU consumption from infinite loop) via a craft…EPSS 18%4.3CVE-2010-2084Microsoft asp.net cross-site scripting vulnerabilityMicrosoft ASP.NET 2.0 does not prevent setting the InnerHtml property on a control that inherits from HtmlContainerControl, which allows remote attac…EPSS 13%4.3CVE-2010-2088Microsoft asp.net cross-site scripting vulnerabilityASP.NET in Microsoft .NET 3.5 does not properly handle an unencrypted view state, which allows remote attackers to conduct cross-site scripting (XSS)…EPSS 9.0%4.3CVE-2005-0452Microsoft asp.net vulnerabilityMultiple cross-site scripting (XSS) vulnerabilities in Microsoft ASP.NET (.Net) 1.0 and 1.1 to SP1 allow remote attackers to inject arbitrary HTML or…EPSS 23%

Source: NIST National Vulnerability Database (record CVE-2005-1665), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.