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CVE-2005-1664
The __VIEWSTATE functionality in Microsoft ASP.NET 1.x allows remote attackers to conduct replay attacks to (1) apply a ViewState…
- 6.4MediumCVSS base score
- 18.8%Exploitation in 30 daysEPSS · top 2.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By mitre
Published
- 19 years later
· 19 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.4 | AV:N/AC:L/Au:N/C:P/I:P/A:N |
- EPSS (exploitation in 30 days)
- 18.8% · top 2.7% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.4.
Affected products
n/a
- affected n/a
References
6
- 20050503 ASP.NET __VIEWSTATE crypto validation prone to replay attacks (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://scottonwriting.net/sowblog/posts/3747.aspx (opens in a new tab)x_refsource_MISCx_transferred
- 20050505 Re: ASP.NET __VIEWSTATE crypto validation prone to replay attacks (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- ms-aspnet-viewstate-replay(20409) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 15241 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 16196 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2005-1666 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2005-1664)Record last updated .