CVE-2005-4840

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 11.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2005-12-31 · updated 2026-06-16
Weakness: CWE-119

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.

Affected products

Microsoft Outlook Express Book Control: all versions

References

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

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