Unspecified vulnerability in Kerio MailServer before 6.1.4 has unknown impact and remote attack vectors related to a "possible bypass of attachment filter."
Conclusion & alert: CVE-2006-2203 is rated Moderate Risk (48.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.18%). 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 | 0.40% | 1.18% | +0.79% |
| 2 | 2025-03-17 | 0.23% | 0.40% | +0.16% |
| 3 | 2024-12-17 | — | 0.23% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.4 | 2.0 | MEDIUM |
|
10.0 | 4.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| kerio | kerio_mailserver | 6.0.0 | cpe:2.3:a:kerio:kerio_mailserver:6.0.0:*:*:*:*:*:*:* |
| kerio | kerio_mailserver | 6.0.1 | cpe:2.3:a:kerio:kerio_mailserver:6.0.1:*:*:*:*:*:*:* |
| kerio | kerio_mailserver | 6.0.2 | cpe:2.3:a:kerio:kerio_mailserver:6.0.2:*:*:*:*:*:*:* |
| kerio | kerio_mailserver | 6.0.3 | cpe:2.3:a:kerio:kerio_mailserver:6.0.3:*:*:*:*:*:*:* |
| kerio | kerio_mailserver | 6.0.4 | cpe:2.3:a:kerio:kerio_mailserver:6.0.4:*:*:*:*:*:*:* |
| kerio | kerio_mailserver | 6.0.5 | cpe:2.3:a:kerio:kerio_mailserver:6.0.5:*:*:*:*:*:*:* |
| kerio | kerio_mailserver | 6.0.6 | cpe:2.3:a:kerio:kerio_mailserver:6.0.6:*:*:*:*:*:*:* |
| kerio | kerio_mailserver | 6.0.7 | cpe:2.3:a:kerio:kerio_mailserver:6.0.7:*:*:*:*:*:*:* |
| kerio | kerio_mailserver | 6.0.8 | cpe:2.3:a:kerio:kerio_mailserver:6.0.8:*:*:*:*:*:*:* |
| kerio | kerio_mailserver | 6.1.3_patch_1 | cpe:2.3:a:kerio:kerio_mailserver:6.1.3_patch_1:*:*:*:*:*:*:* |