{"id":"CVE-2004-0380","aliases":["EUVD-2004-0380","GHSA-wv58-cxvm-2w2g"],"status":"published","title":"The MHTML protocol handler in Microsoft Outlook Express 5.5 SP2 through Outlook Express 6 SP1...","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.\"","severity":{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.6325,"percentile":0.99211,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2004-04-06T04:00:00Z","modified":"2026-06-16T22:05:31Z","exploits":[{"source":"exploitdb","id":"EDB-23400","title":"Microsoft Outlook Express 6.0 - '.MHTML' Forced File Execution (1)","type":"remote","platform":"windows","date":"2003-11-25","verified":true,"url":"https://www.exploit-db.com/exploits/23400"},{"source":"exploitdb","id":"EDB-23401","title":"Microsoft Outlook Express 6.0 - MHTML Forced File Execution (2)","type":"remote","platform":"windows","date":"2003-11-25","verified":true,"url":"https://www.exploit-db.com/exploits/23401"},{"source":"exploitdb","id":"EDB-23695","title":"Microsoft Internet Explorer 5.0.1 - ITS Protocol Zone Bypass (MS04-013)","type":"remote","platform":"windows","date":"2004-02-13","verified":true,"url":"https://www.exploit-db.com/exploits/23695"}],"products":[{"vendor":"microsoft","product":"outlook_express"}],"references":[{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A990","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://www.securityfocus.com/bid/9105","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.kb.cert.org/vuls/id/323070","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","US Government Resource"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1010","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/15705","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-013","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"http://www.securityfocus.com/bid/9658","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA04-104A.html","tags":["third-party-advisory","x_refsource_CERT","x_transferred","US Government Resource"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A882","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://www.k-otik.net/bugtraq/02.18.InternetExplorer.php","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/358913","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Exploit","Patch","Vendor Advisory"]},{"url":"http://www.securityfocus.com/archive/1/354447","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Patch","Vendor Advisory"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1028","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://secunia.com/advisories/10523","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2004-0380"},{"url":"https://github.com/advisories/GHSA-wv58-cxvm-2w2g"}],"sources":{"cve":[{"id":"CVE-2004-0380","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.\"","status":"published","published":"2004-04-06T04:00:00Z","modified":"2024-08-08T00:17:14.315Z","updated_at":"2026-11-02T14:34:54.758165Z"}],"euvd":[{"id":"EUVD-2004-0380","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.\"","status":"published","published":"2004-04-06T04:00:00Z","modified":"2024-08-08T00:17:14Z","updated_at":"2026-11-03T01:15:19.621932Z"}],"ghsa":[{"id":"GHSA-wv58-cxvm-2w2g","title":"The MHTML protocol handler in Microsoft Outlook Express 5.5 SP2 through Outlook Express 6 SP1...","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.\"","status":"published","published":"2022-04-29T02:57:38Z","modified":"2023-01-30T05:02:42Z","updated_at":"2026-11-02T14:46:42.161058Z"}],"nvd":[{"id":"CVE-2004-0380","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.\"","status":"published","published":"2004-05-04T04:00:00Z","modified":"2026-06-16T22:05:31.463Z","cvss":[{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:00:49.729639Z"}]}}