CVE-2009-4074

Name: CVE-2009-4074
Creator: NVD / NIST
Published: 2009-11-25T18:30:00.25+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 14.84%

Last modified Jun 16, 2026

CVE-2009-4074 is a vulnerability of currently unknown severity. The XSS Filter in Microsoft Internet Explorer 8 allows remote attackers to leverage the "response-changing mechanism" to conduct cross-site scripting (XSS) attacks against web sites that have no inherent XSS vulnerabilities, related to the details of output encoding and improper modification of an HTML attribute, aka "XSS Filter Script Handling Vulnerability.". EPSS estimates a 14.84% chance of exploitation in the next 30 days.

Description

The XSS Filter in Microsoft Internet Explorer 8 allows remote attackers to leverage the "response-changing mechanism" to conduct cross-site scripting (XSS) attacks against web sites that have no inherent XSS vulnerabilities, related to the details of output encoding and improper modification of an HTML attribute, aka "XSS Filter Script Handling Vulnerability."

Metrics

EPSS Probability

14.84%

96.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Microsoft	Internet Explorer	8

References

Timeline

Published: Nov 25, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-4074?

How severe is CVE-2009-4074?

Severity scoring for CVE-2009-4074 is pending analysis. The EPSS model estimates a 14.84% probability of exploitation in the next 30 days.

How do I fix CVE-2009-4074?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-4074?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST