What is CVE-2025-28389?

CVE-2025-28389 is a critical-severity vulnerability in Openc3 Cosmos, classified under Weak Password Requirements. CVSS score: 9.8/10. Published 2025-06-13.

How severe is CVE-2025-28389?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Openc3 Cosmos

CVE-2025-28389

Weak password requirements in OpenC3 COSMOS v6.0.0 allow attackers to bypass authentication via a brute force attack.

EPSS: 0.005 (41.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Openc3 Cosmos — versions 6.0.0
N/a — versions n/a

Weakness classification (CWE)

CWE-521 — Weak Password Requirements

References

cve@mitre.org (Product)
cve@mitre.org (Exploit, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2025-28389?: CVE-2025-28389 is a critical-severity vulnerability in Openc3 Cosmos, classified under Weak Password Requirements. CVSS score: 9.8/10. Published 2025-06-13.
How severe is CVE-2025-28389?: Critical severity. CVSS v3 base score is 9.8 out of 10.