CVE-2025-28389

Name: CVE-2025-28389
Creator: NVD / NIST
Published: 2025-06-13T14:15:21.01+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.54%

Last modified Jun 17, 2026

CVE-2025-28389 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Weak password requirements in OpenC3 COSMOS v6.0.0 allow attackers to bypass authentication via a brute force attack.. EPSS estimates a 0.54% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.54%

41.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-521

Affected Software

Vendor	Product	Versions
Openc3	Cosmos	6.0.0

References

https://openc3.com/Product
https://visionspace.com/openc3-cosmos-a-security-assessment-of-an-open-source-mission-framework/Exploit, Mitigation, Third Party Advisory

Timeline

Published: Jun 13, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-28389?

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

How severe is CVE-2025-28389?

CVE-2025-28389 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.

How do I fix CVE-2025-28389?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-28389?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST