Multiple unspecified vulnerabilities in the IBM Proventia engine 4.9.0.0.44 20081231, as used in IBM Proventia Network Mail Security System, Network Mail Security System Virtual Appliance, Desktop Endpoint Security, Network Multi-Function Security (MFS), and possibly other products, allow remote attackers to bypass detection of malware via a modified (1) ZIP or (2) CAB archive, a related issue to CVE-2009-1240.
Conclusion & alert: CVE-2009-2543 is rated High Risk (70.1/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.28%). Core evidence: EPSS rose +1.86% over the last day, indicating growing attacker interest. 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 | 2026-06-15 | 0.42% | 2.28% | +1.86% |
| 2 | 2025-12-09 | 0.47% | 0.42% | -0.05% |
| 3 | 2025-03-30 | — | 0.47% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| ibm | proventia_desktop_endpoint_security | — | cpe:2.3:a:ibm:proventia_desktop_endpoint_security:*:*:*:*:*:*:*:* |
| ibm | proventia_network_mail_security_system | — | cpe:2.3:a:ibm:proventia_network_mail_security_system:*:*:*:*:*:*:*:* |
| ibm | proventia_network_mail_security_system_vitual_appliance | — | cpe:2.3:a:ibm:proventia_network_mail_security_system_vitual_appliance:*:*:*:*:*:*:*:* |
| ibm | proventia_network_multi-function_security | — | cpe:2.3:a:ibm:proventia_network_multi-function_security:*:*:*:*:*:*:*:* |