GHSA-w757-4qv9-mghp · Severity: critical · Ecosystem: rubygems — openc3-api Vulnerable to Unauthenticated Remote Code Execution
OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. From 5.0.0 to 6.10.1, OpenC3 COSMOS contains a critical remote code execution vulnerability reachable through the JSON-RPC API. When a JSON-RPC request uses the string form of certain APIs, attacker-controlled parameter text is parsed into values using String#convert_to_value. For array-like inputs, convert_to_value executes eval(). Because the cmd code path parses the command string before calling authorize(), an unauthenticated attacker can trigger Ruby code execution even though the request ultimately fails authorization (401). This vulnerability is fixed in 6.10.2.
Conclusion & alert: CVE-2025-68271 is rated Moderate Risk (61.3/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.40%). Mandatory action: Review affected assets and schedule 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 | 2026-05-15 | 0.29% | 0.40% | +0.10% |
| 2 | 2026-01-19 | 0.22% | 0.29% | +0.07% |
| 3 | 2026-01-14 | — | 0.22% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 3.1 | CRITICAL |
|
3.9 | 6.0 | [email protected] |
GHSA-w757-4qv9-mghp · Severity: critical · Ecosystem: rubygems — openc3-api Vulnerable to Unauthenticated Remote Code Execution
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||