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CVE Record

CVE-2004-0380: The MHTML protocol handler in Microsoft Outlook Express 5.5 SP2 through Outlook Express 6 SP1 allows remote...

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."

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

This is an old Microsoft Outlook Express/Internet Explorer handling flaw that could let a remote attacker bypass browser domain restrictions and run code. Business risk is mainly from unpatched legacy Windows systems still using affected components or retaining them for operational reasons. Exposure is most plausible on legacy Windows hosts with Outlook Express 5.5 SP2 through Outlook Express 6 SP1 and related Internet Explorer/CHM handling still present. Modern exposure cannot be inferred from the provided sources. Treat this as high priority where legacy Microsoft email or browser components remain in use. It is less relevant to modern, fully patched fleets, but any exposed legacy desktop can create a serious endpoint compromise path. Mitigation focus: Review and apply Microsoft MS04-013 guidance for affected legacy systems.; Retire or isolate systems requiring affected Outlook Express versions.; Limit untrusted web and email access from legacy hosts until remediated..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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CVE-2004-0380 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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