Multiple interpretation error in Trend Micro (1) PC-Cillin 2005 12.0.1244 with the 7.510.1002 engine and (2) OfficeScan 7.0 with the 7.510.1002 engine allows remote attackers to bypass virus scanning via a file such as BAT, HTML, and EML with an "MZ" magic byte sequence which is normally associated with EXE, which causes the file to be treated as a safe type that could still be executed as a dangerous file type by applications on the end system, as demonstrated by a "triple headed" program that contains EXE, EML, and HTML content, aka the "magic byte bug."
Conclusion & alert: CVE-2005-3379 is rated Moderate Risk (46.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.45%). Core evidence: EPSS rose +1.22% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule 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 | 2026-06-15 | 0.23% | 1.45% | +1.22% |
| 2 | 2025-03-30 | 0.26% | 0.23% | -0.03% |
| 3 | 2025-03-29 | — | 0.26% | — |
Full EPSS history (13 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.1 | 2.0 | MEDIUM |
|
4.9 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| trend_micro | officescan | 7.0_engine_7.510.1002 | cpe:2.3:a:trend_micro:officescan:7.0_engine_7.510.1002:*:*:*:*:*:*:* |
| trend_micro | pc-cillin_2005 | 12.0.1244_engine_7.510.1002 | cpe:2.3:a:trend_micro:pc-cillin_2005:12.0.1244_engine_7.510.1002:*:*:*:*:*:*:* |