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."
Official description from the CVE record, published by mitre. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org
Key data
EPSS
- Score
- 0.63250 (63.2% probability)
- Percentile
- 99.2%
- Scores of
- Nov 10, 2026
- Model
- v2026.06.15
References
- oval:org.mitre.oval:def:990 (oval.cisecurity.org)vdb-entrysignature
- 9105 (securityfocus.com)vdb-entry
- VU#323070 (kb.cert.org)third-party-advisory
- oval:org.mitre.oval:def:1010 (oval.cisecurity.org)vdb-entrysignature
- outlook-mhtml-execute-code(15705) (exchange.xforce.ibmcloud.com)vdb-entry
- MS04-013 (docs.microsoft.com)vendor-advisory
- 9658 (securityfocus.com)vdb-entry
- TA04-104A (us-cert.gov)third-party-advisory
- oval:org.mitre.oval:def:882 (oval.cisecurity.org)vdb-entrysignature
- k-otik.net/bugtraq/02.18.InternetExplorer.php
- 20040328 IE ms-its: and mk:@MSITStore: vulnerability (securityfocus.com)mailing-list
- 20040219 Microsoft Internet Explorer Unspecified CHM File Processing Arbitrary Code Execution Vulnerability (bid 9658) (securityfocus.com)mailing-list
- oval:org.mitre.oval:def:1028 (oval.cisecurity.org)vdb-entrysignature
- 10523 (secunia.com)third-party-advisory
Timeline
- ID reserved
- Record published
- Record last updated
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About CubePath
Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:46 UTC. Sources and licenses