How severe is CVE-2002-2155?

CVE-2002-2155 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2002-2155 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-2155?

CVE-2002-2155 primarily affects Cerulean Studios Trillian. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2002-2155?

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-2002-2155 published?

CVE-2002-2155 was published on 2002-12-31 and last updated on 2026-06-16.

CVE-2002-2155

CVE-2002-2155 is a high-severity vulnerability in Cerulean Studios Trillian 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: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cerulean Studios Trillian
Published: 2002-12-31
Last modified: 2026-06-16

Description

Format string vulnerability in the error handling of IRC invite responses for Trillian 0.725 and 0.73 allows remote IRC servers to execute arbitrary code via an invite to a channel with format string specifiers in the name.

Frequently asked questions

What is CVE-2002-2155?: Format string vulnerability in the error handling of IRC invite responses for Trillian 0.725 and 0.73 allows remote IRC servers to execute arbitrary code via an invite to a channel with format string specifiers in the name.
How severe is CVE-2002-2155?: CVE-2002-2155 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2002-2155 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-2155?: CVE-2002-2155 primarily affects Cerulean Studios Trillian. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2002-2155?: 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-2002-2155 published?: CVE-2002-2155 was published on 2002-12-31 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:cerulean_studios:trillian:0.73:*:*:*:*:*:*:*
cpe:2.3:a:cerulean_studios:trillian:0.725:*:*:*:*:*:*:*

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