$ cve CVE-2004-0380 JSON

CVE-2004-0380 EXPLOIT

10.0

HIGH · CVSS 2.0 · EPSS 63.3% (pctl 99)

Patch early

A public exploit exists.

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."

Scoring

CVSS	10.0 (HIGH, v2.0)
Vector	AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS	63.25% — more likely to be exploited than 99% of all CVEs
On CISA KEV	no
Public exploit	yes
Published	2004-05-04
Last modified	2026-06-16

Affected (1)

Vendor	Product
microsoft	outlook express

Public exploits

Source	Title	Date
exploit-db	Microsoft Internet Explorer 5.0.1 - ITS Protocol Zone Bypass (MS04-013)	2004-02-13
exploit-db	Microsoft Outlook Express 6.0 - '.MHTML' Forced File Execution (1)	2003-11-25
exploit-db	Microsoft Outlook Express 6.0 - MHTML Forced File Execution (2)	2003-11-25

References

→ the Explorer · watch your stack · NVD