Multiple heap-based buffer overflows in the IRC component in Cerulean Studios Trillian Pro before 3.1.5.1 allow remote attackers to corrupt memory and possibly execute arbitrary code via (1) a URL with a long UTF-8 string, which triggers the overflow when the user highlights it, or (2) a font HTML tag with a face attribute containing a long UTF-8 string.
Conclusion & alert: CVE-2007-2478 is rated High Risk (66/100): CVSS Critical severity, with high exploitation likelihood (EPSS 16.36%, 95th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-03-26 | 20.71% | 16.36% | -4.35% |
| 2 | 2026-03-02 | 20.80% | 20.71% | -0.09% |
| 3 | 2025-12-20 | — | 20.80% | — |
Full EPSS history (13 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| cerulean_studios | trillian_pro | <= 3.1.5.0 | cpe:2.3:a:cerulean_studios:trillian_pro:*:*:*:*:*:*:*:* |