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CVE-2005-4840

17
FAUCET Score

CVE-2005-4840 describes a denial-of-service vulnerability in the Outlook Express Address Book control when used within Internet Explorer 6. Remote attackers can trigger a browser crash by instantiating the COM object, which was not designed for this context. This vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and partial availability impact, with no confidentiality or integrity impact. There is no public exploit intelligence available, and the CVE has received minimal community discussion or media coverage, suggesting it is not actively exploited.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:microsoft:outlook_express_book_control:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
11.52%
Probability of exploitation in next 30 days
EPSS Percentile
95.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1152 is in the 95th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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