Multiple stack-based buffer overflows in Tumbleweed Email Firewall (EMF) allow remote attackers to execute arbitrary code via an email attachment with an LHA archive that contains a (1) file or (2) directory with a long LHA extended header, (3) an LHA archive in which the "temporary pathname" field for decompressed output is greater than 2 bytes, or (4) an LHA archive with a long filename.
Conclusion & alert: CVE-2006-3901 is rated Moderate Risk (58.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.53%). 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 | 5.42% | 3.53% | -1.89% |
| 2 | 2025-03-30 | 4.19% | 5.42% | +1.23% |
| 3 | 2025-03-29 | — | 4.19% | — |
Full EPSS history (9 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| tumbleweed | mailgate_email_firewall | — | cpe:2.3:a:tumbleweed:mailgate_email_firewall:*:*:*:*:*:*:*:* |