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Vulnerability Score 6.4 6.4
CVE Id CVE-2005-1664
Last Modified 05 Sep 2008 04:49:44
Published 18 May 2005 12:00:00
Confidentiality Impact PARTIAL PARTIAL
Integrity Impact PARTIAL PARTIAL
Availability Impact NONE NONE
Access Vector NETWORK
Access Complexity LOW
Authentication NONE



The __VIEWSTATE functionality in Microsoft ASP.NET 1.x allows remote attackers to conduct replay attacks to (1) apply a ViewState generated from one view to a different view, (2) reuse ViewState information after the application's state has changed, or (3) use the ViewState to conduct attacks or expose content to third parties.

Vulnerable Systems


  • Microsoft 1.0

  • Microsoft 1.1


XF - ms-aspnet-viewstate-replay(20409)

OSVDB - 16196

SECUNIA - 15241


BUGTRAQ - 20050505 Re: ASP.NET __VIEWSTATE crypto validation prone to replay attacks

BUGTRAQ - 20050503 ASP.NET __VIEWSTATE crypto validation prone to replay attacks

Last Updated: 27 May 2016 10:40:14