Stack-based buffer overflow in the Data Archiver service in GE Intelligent Platforms Proficy Historian before 3.5 SIM 17 and 4.x before 4.0 SIM 12 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via crafted TCP message traffic.
Conclusion & alert: CVE-2011-1918 is rated High Risk (72.2/100): CVSS Critical severity, with high exploitation likelihood (EPSS 6.29%, 93th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. 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 | 2026-06-17 | 6.56% | 6.29% | -0.28% |
| 2 | 2026-06-15 | 4.56% | 6.56% | +2.00% |
| 3 | 2026-02-20 | — | 4.56% | — |
Full EPSS history (14 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 |
|---|---|---|---|
| ge | intelligent_platforms_proficy_historian | <= 3.5 | cpe:2.3:a:ge:intelligent_platforms_proficy_historian:*:*:*:*:*:*:*:* |
| ge | intelligent_platforms_proficy_historian | 4.0 | cpe:2.3:a:ge:intelligent_platforms_proficy_historian:4.0:*:*:*:*:*:*:* |