How severe is CVE-2007-3638?

CVE-2007-3638 has a CVSS 2.0 base score of 6.0, rated medium severity.

Is CVE-2007-3638 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-3638?

CVE-2007-3638 affects Yahoo Messenger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-3638?

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

When was CVE-2007-3638 published?

CVE-2007-3638 was published on 2007-07-10 and last updated on 2026-06-16.

CVE-2007-3638

CVE-2007-3638 is a medium-severity vulnerability in Yahoo Messenger with a CVSS 2.0 base score of 6.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Medium (CVSS 2.0 base score 6.0)
EPSS exploit prediction: 2% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Yahoo Messenger
Published: 2007-07-10
Last modified: 2026-06-16

Description

Buffer overflow in Yahoo! Messenger 8.1 allows user-assisted remote authenticated users, who are listed in an address book, to execute arbitrary code via unspecified vectors, aka ZD-00000005. NOTE: this information is based upon a vague advisory by a vulnerability information sales organization that does not coordinate with vendors or release actionable advisories. A CVE has been assigned for tracking purposes, but duplicates with other CVEs are difficult to determine.

Frequently asked questions

What is CVE-2007-3638?: Buffer overflow in Yahoo! Messenger 8.1 allows user-assisted remote authenticated users, who are listed in an address book, to execute arbitrary code via unspecified vectors, aka ZD-00000005. NOTE: this information is based upon a vague advisory by a vulnerability information sales organization that does not coordinate with vendors or release actionable advisories. A CVE has been assigned for tracking purposes, but duplicates with other CVEs are difficult to determine.
How severe is CVE-2007-3638?: CVE-2007-3638 has a CVSS 2.0 base score of 6.0, rated medium severity.
Is CVE-2007-3638 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-3638?: CVE-2007-3638 affects Yahoo Messenger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-3638?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-3638 published?: CVE-2007-3638 was published on 2007-07-10 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:yahoo:messenger:8.1:*:*:*:*:*:*:*

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