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CVE-2025-68271VulnerabilityPublished

CVE-2025-68271: OpenC3 cosmos · Eval Injection

Affects OpenC3 cosmosSource CVE Database V5

0

Not known to be exploited · CVSS 10.0 Critical : upgrade to 6.10.2 as a priority.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
10.0Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 6.10.2, 6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Upgrade cosmos to 6.10.2; openc3/cosmos to 6.

Affected software

ProductAffectedFixed in
OpenC3cosmosAffected
  • >=5.0.0 <6.10.2
Fixed in
  • 6.10.2
GitHubopenc3/cosmospkg:github/openc3/cosmosOther threatsAffected
  • <6
Fixed in
  • 6

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

European organizations should immediately upgrade OpenC3 COSMOS to version 6.10.2 or later, where the vulnerability is fixed. If immediate upgrade is not feasible, organizations should restrict access to the JSON-RPC API to trusted networks only, using network segmentation, firewalls, and VPNs to limit exposure. Implement strict input validation and monitoring on API endpoints to detect anomalous or malicious requests. Employ runtime application self-protection (RASP) or web application firewalls (WAFs) capable of detecting and blocking eval injection patterns. Conduct thorough audits of embedded systems management environments to identify and remediate any unauthorized access or suspicious activity. Additionally, review and tighten authorization logic to ensure no code execution occurs prior to authentication and authorization checks in future development cycles.

Description

CVE-2025-68271 is a critical remote code execution vulnerability in OpenC3 COSMOS versions 5.0.0 through 6.10.1. The flaw arises from improper neutralization of directives in dynamically evaluated code (eval injection) within the JSON-RPC API. An attacker can send specially crafted JSON-RPC requests that trigger Ruby's eval() function on attacker-controlled input before authorization checks occur, allowing unauthenticated remote code execution. This vulnerability has a CVSS score of 10.0, indicating maximum severity, and affects embedded systems management environments using OpenC3 COSMOS. The issue is fixed in version 6.

References

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