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CVE-2004-0043

20
FAUCET Score

CVE-2004-0043 describes a buffer overflow vulnerability in Yahoo Instant Messenger versions 5.6.0.1351 and earlier. This flaw allows remote attackers to trigger a denial of service by sending a long filename through the download feature, potentially leading to arbitrary code execution. With a CVSS score of 7.5, it is considered highly severe due to its network-based attack vector, low attack complexity, and potential for partial impact on confidentiality, integrity, and availability. While no public exploit code or active exploitation is reported, and community discussion is minimal, the vulnerability's nature suggests a significant risk if exploited.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.6.0.1351CPE matchmatch criteria
cpe:2.3:a:yahoo:messenger:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.60%
Probability of exploitation in next 30 days
EPSS Percentile
88.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0360 is in the 79th percentile among its peer group of 51,551 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, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

lists.grok.org.uk / pipermail/full-disclosure/2004-January/015334.html
marc.info
secunia.com / advisories/10573
exchange.xforce.ibmcloud.com / vulnerabilities/14171
osvdb.org / 3437
securityfocus.com / bid/9383
securitytracker.com / id