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CVE-2002-0321

16
FAUCET Score

CVE-2002-0321 describes a vulnerability in Yahoo! Messenger 5.0 that allows remote attackers to spoof user identities. By modifying the username, attackers could engage in social engineering or launch denial-of-service (flooding) attacks. This vulnerability has a CVSS score of 5.0, indicating a medium severity with low attack complexity and no authentication required, primarily impacting integrity. There is no evidence of active exploitation, nor is exploit code publicly available in Metasploit, Nuclei, or ExploitDB, and it has garnered no community or media attention.

Impacted Technologies

VendorProductVersion(s)CPE
5.0CPE matchmatch criteria
cpe:2.3:a:yahoo:messenger:5.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.28%
Probability of exploitation in next 30 days
EPSS Percentile
87.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0328 is in the 82nd percentile among its peer group of 23,723 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, 0.0 Mastodon, and 0.4 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

marc.info
cert.org / advisories/CA-2002-16.html
US Government Resource
iss.net / security_center/static/8267.php
PatchVendor Advisory
kb.cert.org / vuls/id/952875
US Government Resource
securityfocus.com / bid/4164
Vendor Advisory