WellinTech KingHistorian 3.0 allows remote attackers to execute arbitrary code or cause a denial of service (invalid pointer write) via a crafted packet to TCP port 5678.
Conclusion & alert: CVE-2012-2559 is rated High Risk (72.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 4.59%, 90th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +1.14% 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 | 3.45% | 4.59% | +1.14% |
| 2 | 2026-05-27 | 2.20% | 3.45% | +1.25% |
| 3 | 2026-03-06 | — | 2.20% | — |
Full EPSS history (15 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 |
|---|---|---|---|
| wellintech | kinghistorian | 3.0 | cpe:2.3:a:wellintech:kinghistorian:3.0:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.us-cert.gov/control_systems/pdf/ICSA-12-185-01.pdf | US Government Resource |