How severe is CVE-2002-0321?

CVE-2002-0321 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2002-0321 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-0321?

CVE-2002-0321 affects Yahoo Messenger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2002-0321?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2002-0321 published?

CVE-2002-0321 was published on 2002-06-25 and last updated on 2026-06-16.

CVE-2002-0321

CVE-2002-0321 is a medium-severity vulnerability in Yahoo Messenger with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Yahoo Messenger
Published: 2002-06-25
Last modified: 2026-06-16

Description

Yahoo! Messenger 5.0 allows remote attackers to spoof other users by modifying the username and using the spoofed username for social engineering or denial of service (flooding) attacks.

Frequently asked questions

What is CVE-2002-0321?: Yahoo! Messenger 5.0 allows remote attackers to spoof other users by modifying the username and using the spoofed username for social engineering or denial of service (flooding) attacks.
How severe is CVE-2002-0321?: CVE-2002-0321 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2002-0321 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-0321?: CVE-2002-0321 affects Yahoo Messenger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2002-0321?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2002-0321 published?: CVE-2002-0321 was published on 2002-06-25 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:yahoo:messenger:5.0:*:*:*:*:*:*:*

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