CVE-2026-71187 Ebyte NA111-M Use of Client-Side Authentication

Critical 9.3 Published Updated

Attackers can bypass client-side authentication to gain administrative access to Ebyte NA111-M devices.

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-2026-71187?

CVE-2026-71187 is a critical authentication bypass vulnerability in Ebyte NA111-M Firmware, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Ebyte device relies on client side authentication logic that can be reproduced by unauthenticated users. An attacker may generate valid authentication requests and bypass authentication to obtain administrative access to the device.

Weakness: CWE-603

Which versions are affected by CVE-2026-71187?

How do I fix CVE-2026-71187?

No fix has been published for CVE-2026-71187 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-2026-71187 being exploited?

There is no known exploitation of CVE-2026-71187 in the wild and no public exploit code.

Sources

Also known as GHSA-rj7p-436q-6xv2.

Is CVE-2026-71187 in your software?

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