How severe is CVE-2006-5563?

CVE-2006-5563 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2006-5563 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-5563?

CVE-2006-5563 affects Yahoo Messenger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-5563?

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

When was CVE-2006-5563 published?

CVE-2006-5563 was published on 2006-10-27 and last updated on 2026-06-16.

CVE-2006-5563

CVE-2006-5563 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: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Yahoo Messenger
Published: 2006-10-27
Last modified: 2026-06-16

Description

Unspecified vulnerability in Yahoo! Messenger (Service 18) before 8.1.0.195 allows remote attackers to cause a denial of service (NULL dereference and application crash) via a crafted room name in a Conference Invite. NOTE: the provenance of this information is unknown; the details are obtained from third party information.

Frequently asked questions

What is CVE-2006-5563?: Unspecified vulnerability in Yahoo! Messenger (Service 18) before 8.1.0.195 allows remote attackers to cause a denial of service (NULL dereference and application crash) via a crafted room name in a Conference Invite. NOTE: the provenance of this information is unknown; the details are obtained from third party information.
How severe is CVE-2006-5563?: CVE-2006-5563 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-5563 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-5563?: CVE-2006-5563 affects Yahoo Messenger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-5563?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-5563 published?: CVE-2006-5563 was published on 2006-10-27 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:yahoo:messenger:8.0:*:*:*:*:*:*:*

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