PatchTheCVEopenc3 vulnerabilities
Recent CVEs affecting openc3 products. 5 tracked.
openc3 has 5 tracked vulnerabilities, 2 critical. A fixed release or vendor patch exists for 5. Most recent: 2026-05-04. Highest priority: CVE-2026-42087 (score 45/100).
- CVE-2026-42087 CRITICAL 9.6 UPGRADE OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded
- CVE-2026-42088 CRITICAL 9.6 UPGRADE OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded
- CVE-2026-42084 HIGH 8.1 UPGRADE OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded
- CVE-2026-42085 MEDIUM 4.3 UPGRADE OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded
- CVE-2026-42086 MEDIUM 4.6 UPGRADE OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded
FAQ
How do I fix openc3 vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is openc3 being exploited right now?
None of the tracked openc3 CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which openc3 CVE should I patch first?
CVE-2026-42087 currently ranks highest (45/100): OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded.