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TI-2004-00347 Aliases CVE-2004-0380GHSA-wv58-cxvm-2w2g

The MHTML protocol handler in Microsoft Outlook Express 5.5 SP2 through Outlook Express 6…

Priority HIGH 78Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Complete · Complete · Complete
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

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."

Why it matters now

EPSS 0.6325 99th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:outlook_express:5.5:*:*:*:*:*:*:*5.5VulnerableMicrosoft
cpe:2.3:a:microsoft:outlook_express:6.0:*:*:*:*:*:*:*6.0VulnerableMicrosoft
  • cpe:2.3:a:microsoft:outlook_express:5.5:*:*:*:*:*:*:* Versions 5.5 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:outlook_express:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2004-0380
  2. 2026-10-03 Alias added: GHSA-wv58-cxvm-2w2g

References

Advisory 3

Other 5

  • TI-2007-03777 Heap-based buffer overflow in Microsoft Outlook Express 6 and earlier, and Windows Mail… CVSS 2.0HIGH 9.3
  • TI-2005-01149 Stack-based buffer overflow in the news reader for Microsoft Outlook Express (MSOE.DLL)… CVSS 2.0HIGH 7.5
  • TI-2010-00777 Integer overflow in inetcomm.dll in Microsoft Outlook Express 5.5 SP2, 6, and 6 SP1… CVSS 2.0HIGH 9.3
  • TI-2010-03008 Untrusted search path vulnerability in wab.exe 6.00.2900.5512 in Windows Address Book in… CVSS 2.0HIGH 9.3
  • TI-2007-03910 Argument injection vulnerability involving Microsoft Outlook and Outlook Express, when… CVSS 3.1HIGH 8.8
  • TI-2001-01278 Internet Explorer 5.0 and 5.5, and Outlook Express 5.0 and 5.5, allow remote attackers to… CVSS 2.0HIGH 7.5
See all 44 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences