Is CVE-2005-1664 in the CISA KEV catalog?

No. CVE-2005-1664 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2005-1664?

CVE-2005-1664 has a CVSS v2 base score of 6.4 (MEDIUM).

What is the EPSS score for CVE-2005-1664?

CVE-2005-1664 has an EPSS score of 18.85% (97th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2005-1664

MEDIUMEPSS 97th pctl

6.4

CVSS v2

NVD

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.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

18.85%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.