Is CVE-2011-3417 in the CISA KEV catalog?

No. CVE-2011-3417 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-3417?

CVE-2011-3417 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2011-3417?

CVE-2011-3417 has an EPSS score of 35.73% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2011-3417

HIGHEPSS 98th pctl

9.3

CVSS v2

NVD

Description

The Forms Authentication feature in the ASP.NET subsystem in Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.5 SP1, 3.5.1, and 4.0, when sliding expiry is enabled, does not properly handle cached content, which allows remote attackers to obtain access to arbitrary user accounts via a crafted URL, aka "ASP.NET Forms Authentication Ticket Caching Vulnerability."

CWE-264

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

35.73%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% 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 2026-04-29.