CVE-2025-28386: OPENC3 Cosmos

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

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.

Affected products

• OPENC3 Cosmos: version 6.0.0 only

Published 2025-06-13. Last modified 2026-06-17.