How severe is CVE-2004-0043?

CVE-2004-0043 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2004-0043 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-0043?

CVE-2004-0043 affects Yahoo Messenger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2004-0043?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2004-0043 published?

CVE-2004-0043 was published on 2004-02-03 and last updated on 2026-06-16.

CVE-2004-0043

CVE-2004-0043 is a high-severity vulnerability in Yahoo Messenger with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Yahoo Messenger
Published: 2004-02-03
Last modified: 2026-06-16

Description

Buffer overflow in Yahoo Instant Messenger 5.6.0.1351 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long filename in the download feature.

Frequently asked questions

What is CVE-2004-0043?: Buffer overflow in Yahoo Instant Messenger 5.6.0.1351 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long filename in the download feature.
How severe is CVE-2004-0043?: CVE-2004-0043 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2004-0043 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-0043?: CVE-2004-0043 affects Yahoo Messenger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2004-0043?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2004-0043 published?: CVE-2004-0043 was published on 2004-02-03 and last updated on 2026-06-16.

References

Affected products (1)

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

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