CVE-2025-28389 Weak cryptography in n/a

Critical 9.8 Published Updated

Weak password requirements in OpenC3 COSMOS allow attackers to bypass authentication via brute force attacks, leading to account takeover.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2025-28389?

CVE-2025-28389 is a critical vulnerability in n/a, published on 13 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

Weakness: CWE-521

Which versions are affected by CVE-2025-28389?

1 open source package ship an affected version, including openc3. It affects 1 product.

PackageAffectedFixed in
openc3 PyPIAll versions to 6.0.0None

Products include Openc3 Cosmos.

How do I fix CVE-2025-28389?

No fix has been published for CVE-2025-28389 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-28389 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-28389 exists.

Sources

Also known as GHSA-g4xp-7879-36gf, PYSEC-2025-150.

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