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Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-42084

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to versions 6.10.5 and 7.0.0-rc3, the OpenC3 password change functionality allows a user to change their password without providing the old password, by accepting a valid session token instead. In assumed breach scenarios, this behaviour can be exploited by an attacker who has already obtained a valid session token, to gain persistence in hijacked account (including admin) and prevent legitimate users from accessing the account. This issue has been patched in versions 6.10.5 and 7.0.0-rc3.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 11.6%
CVSS Severity
CVSS v3 Score 8.1
Products affected by CVE-2026-42084
  • Openc3 » Cosmos » Version: N/A
    cpe:2.3:a:openc3:cosmos:-
  • Openc3 » Cosmos » Version: 3.0.0
    cpe:2.3:a:openc3:cosmos:3.0.0
  • Openc3 » Cosmos » Version: 3.0.1
    cpe:2.3:a:openc3:cosmos:3.0.1
  • Openc3 » Cosmos » Version: 3.1.0
    cpe:2.3:a:openc3:cosmos:3.1.0
  • Openc3 » Cosmos » Version: 3.1.1
    cpe:2.3:a:openc3:cosmos:3.1.1
  • Openc3 » Cosmos » Version: 3.1.2
    cpe:2.3:a:openc3:cosmos:3.1.2
  • Openc3 » Cosmos » Version: 3.2.0
    cpe:2.3:a:openc3:cosmos:3.2.0
  • Openc3 » Cosmos » Version: 3.2.1
    cpe:2.3:a:openc3:cosmos:3.2.1
  • Openc3 » Cosmos » Version: 3.3.0
    cpe:2.3:a:openc3:cosmos:3.3.0
  • Openc3 » Cosmos » Version: 3.3.1
    cpe:2.3:a:openc3:cosmos:3.3.1
  • Openc3 » Cosmos » Version: 3.3.2
    cpe:2.3:a:openc3:cosmos:3.3.2
  • Openc3 » Cosmos » Version: 3.3.3
    cpe:2.3:a:openc3:cosmos:3.3.3
  • Openc3 » Cosmos » Version: 3.4.0
    cpe:2.3:a:openc3:cosmos:3.4.0
  • Openc3 » Cosmos » Version: 3.4.1
    cpe:2.3:a:openc3:cosmos:3.4.1
  • Openc3 » Cosmos » Version: 3.4.2
    cpe:2.3:a:openc3:cosmos:3.4.2
  • Openc3 » Cosmos » Version: 3.5.0
    cpe:2.3:a:openc3:cosmos:3.5.0
  • Openc3 » Cosmos » Version: 3.5.1
    cpe:2.3:a:openc3:cosmos:3.5.1
  • Openc3 » Cosmos » Version: 3.5.2
    cpe:2.3:a:openc3:cosmos:3.5.2
  • Openc3 » Cosmos » Version: 3.5.3
    cpe:2.3:a:openc3:cosmos:3.5.3
  • Openc3 » Cosmos » Version: 3.6.0
    cpe:2.3:a:openc3:cosmos:3.6.0
  • Openc3 » Cosmos » Version: 3.6.1
    cpe:2.3:a:openc3:cosmos:3.6.1
  • Openc3 » Cosmos » Version: 3.6.2
    cpe:2.3:a:openc3:cosmos:3.6.2
  • Openc3 » Cosmos » Version: 3.6.3
    cpe:2.3:a:openc3:cosmos:3.6.3
  • Openc3 » Cosmos » Version: 3.7.0
    cpe:2.3:a:openc3:cosmos:3.7.0
  • Openc3 » Cosmos » Version: 3.7.1
    cpe:2.3:a:openc3:cosmos:3.7.1
  • Openc3 » Cosmos » Version: 3.8.0
    cpe:2.3:a:openc3:cosmos:3.8.0
  • Openc3 » Cosmos » Version: 3.8.1
    cpe:2.3:a:openc3:cosmos:3.8.1
  • Openc3 » Cosmos » Version: 3.8.2
    cpe:2.3:a:openc3:cosmos:3.8.2
  • Openc3 » Cosmos » Version: 3.8.3
    cpe:2.3:a:openc3:cosmos:3.8.3
  • Openc3 » Cosmos » Version: 3.9.0
    cpe:2.3:a:openc3:cosmos:3.9.0
  • Openc3 » Cosmos » Version: 3.9.1
    cpe:2.3:a:openc3:cosmos:3.9.1
  • Openc3 » Cosmos » Version: 3.9.2
    cpe:2.3:a:openc3:cosmos:3.9.2
  • Openc3 » Cosmos » Version: 4.0.0
    cpe:2.3:a:openc3:cosmos:4.0.0
  • Openc3 » Cosmos » Version: 4.0.1
    cpe:2.3:a:openc3:cosmos:4.0.1
  • Openc3 » Cosmos » Version: 4.0.2
    cpe:2.3:a:openc3:cosmos:4.0.2
  • Openc3 » Cosmos » Version: 4.0.3
    cpe:2.3:a:openc3:cosmos:4.0.3
  • Openc3 » Cosmos » Version: 4.1.0
    cpe:2.3:a:openc3:cosmos:4.1.0
  • Openc3 » Cosmos » Version: 4.1.1
    cpe:2.3:a:openc3:cosmos:4.1.1
  • Openc3 » Cosmos » Version: 4.2.0
    cpe:2.3:a:openc3:cosmos:4.2.0
  • Openc3 » Cosmos » Version: 4.2.1
    cpe:2.3:a:openc3:cosmos:4.2.1
  • Openc3 » Cosmos » Version: 4.2.2
    cpe:2.3:a:openc3:cosmos:4.2.2
  • Openc3 » Cosmos » Version: 4.2.3
    cpe:2.3:a:openc3:cosmos:4.2.3
  • Openc3 » Cosmos » Version: 4.2.4
    cpe:2.3:a:openc3:cosmos:4.2.4
  • Openc3 » Cosmos » Version: 4.3.0
    cpe:2.3:a:openc3:cosmos:4.3.0
  • Openc3 » Cosmos » Version: 4.4.0
    cpe:2.3:a:openc3:cosmos:4.4.0
  • Openc3 » Cosmos » Version: 4.4.1
    cpe:2.3:a:openc3:cosmos:4.4.1
  • Openc3 » Cosmos » Version: 4.4.2
    cpe:2.3:a:openc3:cosmos:4.4.2
  • Openc3 » Cosmos » Version: 4.5.0
    cpe:2.3:a:openc3:cosmos:4.5.0
  • Openc3 » Cosmos » Version: 4.5.1
    cpe:2.3:a:openc3:cosmos:4.5.1
  • Openc3 » Cosmos » Version: 4.5.2
    cpe:2.3:a:openc3:cosmos:4.5.2
  • Openc3 » Cosmos » Version: 5.0.0
    cpe:2.3:a:openc3:cosmos:5.0.0
  • Openc3 » Cosmos » Version: 5.0.1
    cpe:2.3:a:openc3:cosmos:5.0.1
  • Openc3 » Cosmos » Version: 5.0.10
    cpe:2.3:a:openc3:cosmos:5.0.10
  • Openc3 » Cosmos » Version: 5.0.11
    cpe:2.3:a:openc3:cosmos:5.0.11
  • Openc3 » Cosmos » Version: 5.0.2
    cpe:2.3:a:openc3:cosmos:5.0.2
  • Openc3 » Cosmos » Version: 5.0.3
    cpe:2.3:a:openc3:cosmos:5.0.3
  • Openc3 » Cosmos » Version: 5.0.4
    cpe:2.3:a:openc3:cosmos:5.0.4
  • Openc3 » Cosmos » Version: 5.0.5
    cpe:2.3:a:openc3:cosmos:5.0.5
  • Openc3 » Cosmos » Version: 5.0.6
    cpe:2.3:a:openc3:cosmos:5.0.6
  • Openc3 » Cosmos » Version: 5.0.7
    cpe:2.3:a:openc3:cosmos:5.0.7
  • Openc3 » Cosmos » Version: 5.0.8
    cpe:2.3:a:openc3:cosmos:5.0.8
  • Openc3 » Cosmos » Version: 5.0.9
    cpe:2.3:a:openc3:cosmos:5.0.9
  • Openc3 » Cosmos » Version: 5.1.0
    cpe:2.3:a:openc3:cosmos:5.1.0
  • Openc3 » Cosmos » Version: 5.1.1
    cpe:2.3:a:openc3:cosmos:5.1.1
  • Openc3 » Cosmos » Version: 5.10.0
    cpe:2.3:a:openc3:cosmos:5.10.0
  • Openc3 » Cosmos » Version: 5.10.1
    cpe:2.3:a:openc3:cosmos:5.10.1
  • Openc3 » Cosmos » Version: 5.11.0
    cpe:2.3:a:openc3:cosmos:5.11.0
  • Openc3 » Cosmos » Version: 5.11.1
    cpe:2.3:a:openc3:cosmos:5.11.1
  • Openc3 » Cosmos » Version: 5.11.2
    cpe:2.3:a:openc3:cosmos:5.11.2
  • Openc3 » Cosmos » Version: 5.11.3
    cpe:2.3:a:openc3:cosmos:5.11.3
  • Openc3 » Cosmos » Version: 5.12.0
    cpe:2.3:a:openc3:cosmos:5.12.0
  • Openc3 » Cosmos » Version: 5.13.0
    cpe:2.3:a:openc3:cosmos:5.13.0
  • Openc3 » Cosmos » Version: 5.14.0
    cpe:2.3:a:openc3:cosmos:5.14.0
  • Openc3 » Cosmos » Version: 5.14.1
    cpe:2.3:a:openc3:cosmos:5.14.1
  • Openc3 » Cosmos » Version: 5.14.2
    cpe:2.3:a:openc3:cosmos:5.14.2
  • Openc3 » Cosmos » Version: 5.15.0
    cpe:2.3:a:openc3:cosmos:5.15.0
  • Openc3 » Cosmos » Version: 5.15.1
    cpe:2.3:a:openc3:cosmos:5.15.1
  • Openc3 » Cosmos » Version: 5.15.2
    cpe:2.3:a:openc3:cosmos:5.15.2
  • Openc3 » Cosmos » Version: 5.16.0
    cpe:2.3:a:openc3:cosmos:5.16.0
  • Openc3 » Cosmos » Version: 5.16.1
    cpe:2.3:a:openc3:cosmos:5.16.1
  • Openc3 » Cosmos » Version: 5.16.2
    cpe:2.3:a:openc3:cosmos:5.16.2
  • Openc3 » Cosmos » Version: 5.17.0
    cpe:2.3:a:openc3:cosmos:5.17.0
  • Openc3 » Cosmos » Version: 5.17.1
    cpe:2.3:a:openc3:cosmos:5.17.1
  • Openc3 » Cosmos » Version: 5.18.0
    cpe:2.3:a:openc3:cosmos:5.18.0
  • Openc3 » Cosmos » Version: 5.19.0
    cpe:2.3:a:openc3:cosmos:5.19.0
  • Openc3 » Cosmos » Version: 5.2.0
    cpe:2.3:a:openc3:cosmos:5.2.0
  • Openc3 » Cosmos » Version: 5.20.0
    cpe:2.3:a:openc3:cosmos:5.20.0
  • Openc3 » Cosmos » Version: 5.3.0
    cpe:2.3:a:openc3:cosmos:5.3.0
  • Openc3 » Cosmos » Version: 5.4.0
    cpe:2.3:a:openc3:cosmos:5.4.0
  • Openc3 » Cosmos » Version: 5.4.1
    cpe:2.3:a:openc3:cosmos:5.4.1
  • Openc3 » Cosmos » Version: 5.4.2
    cpe:2.3:a:openc3:cosmos:5.4.2
  • Openc3 » Cosmos » Version: 5.4.3
    cpe:2.3:a:openc3:cosmos:5.4.3
  • Openc3 » Cosmos » Version: 5.5.0
    cpe:2.3:a:openc3:cosmos:5.5.0
  • Openc3 » Cosmos » Version: 5.5.1
    cpe:2.3:a:openc3:cosmos:5.5.1
  • Openc3 » Cosmos » Version: 5.5.2
    cpe:2.3:a:openc3:cosmos:5.5.2
  • Openc3 » Cosmos » Version: 5.6.0
    cpe:2.3:a:openc3:cosmos:5.6.0
  • Openc3 » Cosmos » Version: 5.6.1
    cpe:2.3:a:openc3:cosmos:5.6.1
  • Openc3 » Cosmos » Version: 5.7.0
    cpe:2.3:a:openc3:cosmos:5.7.0
  • Openc3 » Cosmos » Version: 5.7.2
    cpe:2.3:a:openc3:cosmos:5.7.2
  • Openc3 » Cosmos » Version: 5.8.0
    cpe:2.3:a:openc3:cosmos:5.8.0
  • Openc3 » Cosmos » Version: 5.8.1
    cpe:2.3:a:openc3:cosmos:5.8.1
  • Openc3 » Cosmos » Version: 5.9.0
    cpe:2.3:a:openc3:cosmos:5.9.0
  • Openc3 » Cosmos » Version: 5.9.1
    cpe:2.3:a:openc3:cosmos:5.9.1
  • Openc3 » Cosmos » Version: 6.0.0
    cpe:2.3:a:openc3:cosmos:6.0.0
  • Openc3 » Cosmos » Version: 6.0.1
    cpe:2.3:a:openc3:cosmos:6.0.1
  • Openc3 » Cosmos » Version: 6.0.2
    cpe:2.3:a:openc3:cosmos:6.0.2
  • Openc3 » Cosmos » Version: 6.1.0
    cpe:2.3:a:openc3:cosmos:6.1.0
  • Openc3 » Cosmos » Version: 6.10.0
    cpe:2.3:a:openc3:cosmos:6.10.0
  • Openc3 » Cosmos » Version: 6.10.1
    cpe:2.3:a:openc3:cosmos:6.10.1
  • Openc3 » Cosmos » Version: 6.10.2
    cpe:2.3:a:openc3:cosmos:6.10.2
  • Openc3 » Cosmos » Version: 6.10.3
    cpe:2.3:a:openc3:cosmos:6.10.3
  • Openc3 » Cosmos » Version: 6.10.4
    cpe:2.3:a:openc3:cosmos:6.10.4
  • Openc3 » Cosmos » Version: 6.2.0
    cpe:2.3:a:openc3:cosmos:6.2.0
  • Openc3 » Cosmos » Version: 6.2.1
    cpe:2.3:a:openc3:cosmos:6.2.1
  • Openc3 » Cosmos » Version: 6.3.0
    cpe:2.3:a:openc3:cosmos:6.3.0
  • Openc3 » Cosmos » Version: 6.4.0
    cpe:2.3:a:openc3:cosmos:6.4.0
  • Openc3 » Cosmos » Version: 6.4.1
    cpe:2.3:a:openc3:cosmos:6.4.1
  • Openc3 » Cosmos » Version: 6.4.2
    cpe:2.3:a:openc3:cosmos:6.4.2
  • Openc3 » Cosmos » Version: 6.5.0
    cpe:2.3:a:openc3:cosmos:6.5.0
  • Openc3 » Cosmos » Version: 6.5.1
    cpe:2.3:a:openc3:cosmos:6.5.1
  • Openc3 » Cosmos » Version: 6.6.0
    cpe:2.3:a:openc3:cosmos:6.6.0
  • Openc3 » Cosmos » Version: 6.7.0
    cpe:2.3:a:openc3:cosmos:6.7.0
  • Openc3 » Cosmos » Version: 6.8.0
    cpe:2.3:a:openc3:cosmos:6.8.0
  • Openc3 » Cosmos » Version: 6.8.1
    cpe:2.3:a:openc3:cosmos:6.8.1
  • Openc3 » Cosmos » Version: 6.9.0
    cpe:2.3:a:openc3:cosmos:6.9.0
  • Openc3 » Cosmos » Version: 6.9.1
    cpe:2.3:a:openc3:cosmos:6.9.1
  • Openc3 » Cosmos » Version: 6.9.2
    cpe:2.3:a:openc3:cosmos:6.9.2
  • Openc3 » Cosmos » Version: 7.0.0
    cpe:2.3:a:openc3:cosmos:7.0.0


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