TI-2025-41847 Aliases CVE-2025-68271 GHSA-w757-4qv9-mghp

Unauthenticated Remote Code Execution in openc3-api

MEDIUM 50CWE-95Published 2026-01-13 · Updated 2026-01-13

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-95.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00636 50th percentileScored 2026-11-07

Fix Fixed cosmos (OpenC3): 6.10.2openc3 (RubyGems): 6.10.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
OpenC3	cosmos	5.0.0 to before 6.10.2	6.10.2	Patch available	CNA
—	openc3 (RubyGems)	5.0.6 to before 6.10.2	6.10.2	Patch available	GHSA-w757-4qv9-mghp

cosmos VendorOpenC3 Affected 5.0.0 to before 6.10.2 Fixed in 6.10.2 Patch available CNA
openc3 (RubyGems) Vendor— Affected 5.0.6 to before 6.10.2 Fixed in 6.10.2 Patch available GHSA-w757-4qv9-mghp

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:openc3:cosmos::::::::	—	—	OpenC3

cpe:2.3:a:openc3:cosmos:*:*:*:*:*:*:*:* Versions — — ·OpenC3

Remediation

Fix · CNA cosmos (OpenC3) Fixed in 6.10.2
Fix · GHSA-w757-4qv9-mghp openc3 (RubyGems) Fixed in 6.10.2 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-68271
2026-10-03 Alias added: GHSA-w757-4qv9-mghp
2026-10-21 EPSS moved to the 50th–90th percentile

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-68271

Other 4

TI-2025-20781 Weak password requirements in OpenC3 COSMOS v6.0.0 allow attackers to bypass authentication via a brute force attack. CVSS 3.1CRITICAL 9.8
TI-2025-20780 OpenC3 COSMOS before v6.0.2 was discovered to contain hardcoded credentials for the Service Account. CVSS 3.1CRITICAL 9.8
TI-2025-20779 A remote code execution (RCE) vulnerability in the Plugin Management component of OpenC3… CVSS 3.1CRITICAL 9.8
TI-2025-20778 An issue in the /script-api/scripts/ endpoint of OpenC3 COSMOS before 6.1.0 allows… CVSS 3.1CRITICAL 9.1
TI-2026-54090 Code injection in OpenC3 cosmos CVSS 3.1CRITICAL 9.9
TI-2026-30456 OpenC3 COSMOS: Administrative Actions via the Script Runner Tool CVSS 3.1CRITICAL 9.6

See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences