affected:
- ecosystem_specific: {}
  package:
    ecosystem: PyPI
    name: openc3
    purl: pkg:pypi/openc3
  ranges:
  - events:
    - introduced: '0'
    - last_affected: 6.0.0
    type: ECOSYSTEM
  versions:
  - 0.1.0
  - 5.10.0
  - 5.10.1
  - 5.11.0
  - 5.11.1
  - 5.11.2
  - 5.11.3
  - 5.12.0
  - 5.13.0
  - 5.14.0
  - 5.14.1
  - 5.14.2
  - 5.15.0
  - 5.15.1
  - 5.15.2
  - 5.16.0
  - 5.16.1
  - 5.16.2
  - 5.17.0
  - 5.17.1
  - 5.18.0
  - 5.19.0
  - 5.20.0
  - 5.9.2b0
  - 6.0.0
aliases:
- CVE-2025-28389
details: Weak password requirements in OpenC3 COSMOS v6.0.0 allow attackers to bypass
  authentication via a brute force attack.
id: PYSEC-2025-150
modified: '2026-05-21T14:54:37.020824Z'
published: '2025-06-13T14:15:21.010Z'
references:
- type: WEB
  url: https://openc3.com/
- type: EVIDENCE
  url: https://visionspace.com/openc3-cosmos-a-security-assessment-of-an-open-source-mission-framework/
severity:
- score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  type: CVSS_V3