CVE-2025-51381 Auth bypass in KCM3100

Critical 9.3 Published Updated

An attacker on the local network can bypass authentication in the KAON KCM3100 device, potentially gaining unauthorized access.

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-2025-51381?

CVE-2025-51381 is a critical authentication bypass vulnerability in KAON KCM3100, published on 18 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An authentication bypass vulnerability exists in KCM3100 Ver1.4.2 and earlier. If this vulnerability is exploited, an attacker may bypass the authentication of the product from within the LAN to which the product is connected.

Weakness: CWE-288

Which versions are affected by CVE-2025-51381?

How do I fix CVE-2025-51381?

No fix has been published for CVE-2025-51381 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2025-51381 being exploited?

There is no known exploitation of CVE-2025-51381 in the wild and no public exploit code.

Sources

Also known as GHSA-g74p-x9cp-q6j2.

Is CVE-2025-51381 in your software?

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