How severe is CVE-2007-3305?

CVE-2007-3305 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2007-3305 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-3305?

CVE-2007-3305 affects Cerulean Studios Trillian. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-3305?

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

When was CVE-2007-3305 published?

CVE-2007-3305 was published on 2007-06-21 and last updated on 2026-06-16.

CVE-2007-3305

CVE-2007-3305 is a critical-severity vulnerability in Cerulean Studios Trillian with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cerulean Studios Trillian
Published: 2007-06-21
Last modified: 2026-06-16

Description

Heap-based buffer overflow in Cerulean Studios Trillian 3.x before 3.1.6.0 allows remote attackers to execute arbitrary code via a message sent through the MSN protocol, or possibly other protocols, with a crafted UTF-8 string, which triggers improper memory allocation for word wrapping when a window width is used as a buffer size, a different vulnerability than CVE-2007-2478.

Frequently asked questions

What is CVE-2007-3305?: Heap-based buffer overflow in Cerulean Studios Trillian 3.x before 3.1.6.0 allows remote attackers to execute arbitrary code via a message sent through the MSN protocol, or possibly other protocols, with a crafted UTF-8 string, which triggers improper memory allocation for word wrapping when a window width is used as a buffer size, a different vulnerability than CVE-2007-2478.
How severe is CVE-2007-3305?: CVE-2007-3305 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2007-3305 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-3305?: CVE-2007-3305 affects Cerulean Studios Trillian. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-3305?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2007-3305 published?: CVE-2007-3305 was published on 2007-06-21 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:cerulean_studios:trillian:*:*:*:*:*:*:*:*

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