Is CVE-2011-3404 in the CISA KEV catalog?

No. CVE-2011-3404 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-3404?

CVE-2011-3404 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2011-3404?

CVE-2011-3404 has an EPSS score of 14.28% (96th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2011-3404

MEDIUMEPSS 96th pctl

4.3

CVSS v2

NVD

Description

Microsoft Internet Explorer 6 through 9 does not properly use the Content-Disposition HTTP header to control rendering of the HTTP response body, which allows remote attackers to read content from a different (1) domain or (2) zone via a crafted web site, aka "Content-Disposition Information Disclosure Vulnerability."

CWE-200Information Exposure

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

14.28%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% 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.