{"cve":"CVE-2004-0380","nvd":{"published":"2004-05-04T04:00:00.000","modified":"2026-06-16T22:05:31.463","status":"Modified","description":"The MHTML protocol handler in Microsoft Outlook Express 5.5 SP2 through Outlook Express 6 SP1 allows remote attackers to bypass domain restrictions and execute arbitrary code, as demonstrated on Internet Explorer using script in a compiled help (CHM) file that references the InfoTech Storage (ITS) protocol handlers such as (1) ms-its, (2) ms-itss, (3) its, or (4) mk:@MSITStore, aka the \"MHTML URL Processing Vulnerability.\"","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://secunia.com/advisories/10523","http://www.k-otik.net/bugtraq/02.18.InternetExplorer.php","http://www.kb.cert.org/vuls/id/323070","http://www.securityfocus.com/archive/1/354447","http://www.securityfocus.com/archive/1/358913"],"products":["microsoft:outlook_express"],"source":"nvd","synced_at":"2026-10-19T19:37:11.487553034+00:00"},"epss":{"cve":"CVE-2004-0380","score":0.6325,"percentile":0.99205,"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."]}