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CVE-2007-4391

43
FAUCET Score

CVE-2007-4391 describes a heap-based buffer overflow in the Kakadu kdu_v32m.dll within Yahoo! Messenger 8.1.0.413. This vulnerability allows remote attackers to trigger a denial of service (application crash) by manipulating a length field in JPEG2000 data, specifically demonstrated through a webcam invitation. With a CVSS score of 9.3, it is considered critical, indicating a network-based attack with medium complexity that can lead to complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, public exploit code exists on ExploitDB, and the vulnerability has garnered significant community discussion, though no active exploitation is currently confirmed.

Impacted Technologies

VendorProductVersion(s)CPE
8.1.0.413CPE matchmatch criteria
cpe:2.3:a:yahoo:messenger:8.1.0.413:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
9.31%
Probability of exploitation in next 30 days
EPSS Percentile
94.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-4335 · Aug 29, 2007
This CVE's current EPSS score of 0.0931 is in the 75th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

osvdb.org / 38221
secunia.com / advisories/26501
exchange.xforce.ibmcloud.com / vulnerabilities/36115
xfocus.net / bbs/index.php
avertlabs.com / research/blog/index.php/2007/08/15/more-on-the-yahoo-messenger-webcam-0day
kb.cert.org / vuls/id/515968
US Government Resource
securityfocus.com / bid/25330
securitytracker.com / id
team509.com / expyahoo.rar
vupen.com / english/advisories/2007/2917