NCSA Mosaic 2.1 through 2.7b5 allows local users to cause a denial of service ("remote control" outage) by creating a /tmp/Mosaic.pid file for every possible PID.
Conclusion & alert: CVE-2014-3426 is rated Low Risk (15.7/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.29%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.
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 | 0.05% | 0.29% | +0.24% |
| 2 | 2025-03-23 | 0.04% | 0.05% | +0.01% |
| 3 | 2023-03-07 | — | 0.04% | — |
Full EPSS history (4 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 2.1 | 2.0 | LOW |
|
3.9 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| illinois | ncsa_mosaic | 2.1 | cpe:2.3:a:illinois:ncsa_mosaic:2.1:*:*:*:*:*:*:* |
| illinois | ncsa_mosaic | 2.7 | cpe:2.3:a:illinois:ncsa_mosaic:2.7:-:*:*:*:*:*:* |
| illinois | ncsa_mosaic | 2.7 | cpe:2.3:a:illinois:ncsa_mosaic:2.7:b5:*:*:*:*:*:* |