How severe is CVE-2007-4635?

CVE-2007-4635 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2007-4635 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-4635?

CVE-2007-4635 primarily affects Yahoo Messenger. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-4635?

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

When was CVE-2007-4635 published?

CVE-2007-4635 was published on 2007-08-31 and last updated on 2026-06-16.

CVE-2007-4635

CVE-2007-4635 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. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Yahoo Messenger
Published: 2007-08-31
Last modified: 2026-06-16

Description

Yahoo! Messenger 8.1.0.209 and 8.1.0.402 allows remote attackers to cause a denial of service (application crash) via certain file-transfer packets, possibly involving a buffer overflow, as demonstrated by ym8bug.exe. NOTE: this might be related to CVE-2007-4515. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Frequently asked questions

What is CVE-2007-4635?: Yahoo! Messenger 8.1.0.209 and 8.1.0.402 allows remote attackers to cause a denial of service (application crash) via certain file-transfer packets, possibly involving a buffer overflow, as demonstrated by ym8bug.exe. NOTE: this might be related to CVE-2007-4515. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
How severe is CVE-2007-4635?: CVE-2007-4635 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2007-4635 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-4635?: CVE-2007-4635 primarily affects Yahoo Messenger. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-4635?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-4635 published?: CVE-2007-4635 was published on 2007-08-31 and last updated on 2026-06-16.

References

http://www.securityfocus.com/bid/25484

Affected products (2)

cpe:2.3:a:yahoo:messenger:8.1.0.209:*:*:*:*:*:*:*
cpe:2.3:a:yahoo:messenger:8.1.0.402:*:*:*:*:*:*:*

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