CVE-2004-0380 — HIGH severity vulnerability (The MHTML protocol handler in Microsoft Outlook Express 5.5)
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 suc
| CVE ID | CVE-2004-0380 |
|---|---|
| Severity | HIGH |
| CVSS score | 10.0 |
| CVSS vector | AV:N/AC:L/Au:N/C:C/I:C/A:C |
| CWE | NVD-CWE-Other |
| Status | Modified |
| Published | 2004-05-04 |
| Last modified | 2026-04-16 |
| 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." |
| Source | NIST National Vulnerability Database |
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