CVE-2005-4840: n/a vulnerability

CVE-2005-4840: The Outlook Express Address Book control, when using Internet Explorer 6, allows remote attackers to cause...

The Outlook Express Address Book control, when using Internet Explorer 6, allows remote attackers to cause a denial of service (NULL dereference and browser crash) by creating the OutlookExpress.AddressBook COM object, which is not intended for use within Internet Explorer.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 00:01 UTC (UTC+00:00)

Security readout for executives and security teams

This vulnerability lets a malicious web page crash Internet Explorer 6 by abusing the Outlook Express Address Book control. The documented impact is denial of service, not data theft or code execution. Business urgency is mainly for organizations that still operate legacy Windows desktops or kiosk systems using IE6 and Outlook Express components. Exposure appears limited to legacy environments where Internet Explorer 6 and the Outlook Express Address Book control remain present and usable. Modern managed browsers are not identified as affected in the supplied sources. Treat as legacy risk cleanup rather than an emergency, unless IE6 remains in production. If legacy browsing is still required, prioritize isolation and retirement planning because unsupported browser components create broader exposure than this single crash issue. Mitigation focus: Check Microsoft or vendor guidance; no patch is identified in the supplied sources.; Retire Internet Explorer 6 and Outlook Express from managed endpoints where feasible.; Restrict untrusted web browsing from any remaining legacy systems..

Prepared: Jun 29, 2026, 05:15 UTC (UTC+00:00)

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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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jun 7, 2007, 21:00 UTC (UTC+00:00)

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

2Source links

CVSS and timeline data

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

Source materials

CVE List V5 sourceCVE List V5
outlook-addressbook-activex-dos(34755)CVE reference · vdb-entry, x_refsource_XF

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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