FKIE_CVE-2004-0380
Vulnerability from fkie_nvd - Published: 2004-05-04 04:00 - Updated: 2026-06-16 22:05
Severity
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."
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| microsoft | outlook_express | 5.5 | |
| microsoft | outlook_express | 6.0 |
{
"affected": [
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"affectedData": [
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"vendor": "n/a",
"versions": [
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"status": "affected",
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"source": "cve@mitre.org"
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"configurations": [
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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.\""
},
{
"lang": "es",
"value": "El Manejador del protocolo MHTML en Microsoft Outlook Express 5.5 SP2 a Outlook Express 6 SP1 permite a atacantes remotos eludir restricciones de dominio y ejecutar c\u00f3digo arbitrario, como se ha demostrado en Internet Explorer usando c\u00f3digo script en un archivo de ayuda compilada (CHM) te hace referencia a manejadores de protocolo InfoTech Storage (ITS) como\r\n\r\nms-its\r\nits\r\nmk:@MSITStore\r\n\r\ntambi\u00e9n llamada \"Vulnerabilidad en Procesamiento de URL MHTML\"."
}
],
"id": "CVE-2004-0380",
"lastModified": "2026-06-16T22:05:31.463",
"metrics": {
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{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 10.0,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 10.0,
"obtainAllPrivilege": true,
"obtainOtherPrivilege": false,
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"source": "nvd@nist.gov",
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},
"published": "2004-05-04T04:00:00.000",
"references": [
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"tags": [
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"url": "http://www.kb.cert.org/vuls/id/323070"
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"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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