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CVE-2025-68271

Unauthenticated Remote Code Execution in openc3-api

CVSS 10 CRITICALEPSS 0.5%CWE-95
Vexday Risk Score
28Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 10EPSS 0.5%KEV nãoPoC Nuclei Metasploit Patch
Lifecycle
13 Jan 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
OpenC3 · cosmos

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