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CVE-2005-4840

Published Dec 31, 2005 microsoft CWE-119

Overview

CVE-2005-4840 is a known-severity vulnerability affecting microsoft outlook_express_book_control. It was published on December 31, 2005.

Technical Description

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.

Remediation

Check the references section for vendor advisories and patches from microsoft. Update outlook_express_book_control to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor Product Versions Status

References

Ref browserfun.blogspot.com/2006/07/mobb-3-outlookexpressaddressbook_02.html Ref www.osvdb.org/26836 Ref www.securityfocus.com/archive/1/391803 Ref www.securityfocus.com/archive/1/470694/100/0/threaded Ref exchange.xforce.ibmcloud.com/vulnerabilities/34755 Ref browserfun.blogspot.com/2006/07/mobb-3-outlookexpressaddressbook_02.html Ref www.osvdb.org/26836 Ref www.securityfocus.com/archive/1/391803 Ref www.securityfocus.com/archive/1/470694/100/0/threaded Ref exchange.xforce.ibmcloud.com/vulnerabilities/34755

Frequently Asked Questions

What is CVE-2005-4840?

CVE-2005-4840 is a known-severity vulnerability affecting microsoft outlook_express_book_control. It was published on December 31, 2005.

How severe is CVE-2005-4840?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2005-4840?

Check the references section for vendor advisories and patches from microsoft. Update outlook_express_book_control to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2005-4840?

CyberStrike's AI-powered security agents can automatically detect CVE-2005-4840 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

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