A remote code execution (RCE) vulnerability in the Plugin Management component of OpenC3 COSMOS v6.0.0 allows attackers to execute arbitrary code via uploading a crafted .txt file.
Conclusion & alert: CVE-2025-28386 is rated High Exploit Risk (87.7/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 4.04%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.49% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 2026-04-09 | 1.55% | 4.04% | +2.49% |
| 2 | 2026-02-27 | 1.27% | 1.55% | +0.27% |
| 3 | 2026-02-16 | — | 1.27% | — |
Full EPSS history (13 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| URL | Tags |
|---|---|
| https://openc3.com/ | Product |
| https://visionspace.com/openc3-cosmos-a-security-assessment-of-an-open-source-mission-framework/ | Exploit Mitigation Third Party Advisory |