CVE-2009-4074: Microsoft Internet Explorer

Medium severity, CVSS 4.3. EPSS: 14.8% chance of exploitation in the next 30 days.

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."

Affected products

• Microsoft Internet Explorer: version 8 only

Published 2009-11-25. Last modified 2026-06-16.