Unspecified vulnerability in the MAPI in vBulletin Suite 4.1.2 through 4.1.12, Forum 4.1.2 through 4.1.12, and the MAPI plugin 1.4.3 for vBulletin 3.x has unknown impact and attack vectors.
Conclusion & alert: CVE-2012-4328 is rated High Risk (69.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.46%). 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 | 1.47% | 2.46% | +0.99% |
| 2 | 2025-12-26 | 0.89% | 1.47% | +0.58% |
| 3 | 2025-03-30 | — | 0.89% | — |
Full EPSS history (8 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 |
|---|---|---|---|
| vbulletin | mapi | 1.4.3 | cpe:2.3:a:vbulletin:mapi:1.4.3:*:*:*:*:*:*:* |
| vbulletin | vbulletin_forum | 4.1.2 | cpe:2.3:a:vbulletin:vbulletin_forum:4.1.2:*:*:*:*:*:*:* |
| vbulletin | vbulletin_forum | 4.1.12 | cpe:2.3:a:vbulletin:vbulletin_forum:4.1.12:*:*:*:*:*:*:* |
| vbulletin | vbulletin_suite | 4.1.2 | cpe:2.3:a:vbulletin:vbulletin_suite:4.1.2:*:*:*:*:*:*:* |
| vbulletin | vbulletin_suite | 4.1.12 | cpe:2.3:a:vbulletin:vbulletin_suite:4.1.12:*:*:*:*:*:*:* |