{"cve":"CVE-2009-4074","nvd":{"published":"2009-11-25T18:30:00.250","modified":"2026-06-16T23:12:58.990","status":"Modified","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.\"","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://hackademix.net/2009/11/21/ies-xss-filter-creates-xss-vulnerabilities/","http://www.owasp.org/images/5/50/OWASP-Italy_Day_IV_Maone.pdf","http://www.securityfocus.com/bid/37135","http://www.theregister.co.uk/2009/11/20/internet_explorer_security_flaw/","https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-002"],"products":["microsoft:internet_explorer"],"source":"nvd","synced_at":"2026-10-19T19:54:26.868835795+00:00"},"epss":{"cve":"CVE-2009-4074","score":0.14842,"percentile":0.96694,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}