CVE-2026-36538 Hardcoded credentials in n/a

High 7.3 Published Updated

Hardcoded root credentials allow attackers to authenticate as root and gain full control of the Netis AC1200 Router operating system.

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-2026-36538?

CVE-2026-36538 is a high-severity vulnerability in n/a, published on 27 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Netis AC1200 Router NC21 V4.0.1.4296 contains a hard-coded root credential stored in /etc/shadow.sample. The password for the root account is set to the trivially weak value root, allowing an attacker with access to the device to authenticate as root and gain full control of the underlying operating system.

Weakness: CWE-798

Which versions are affected by CVE-2026-36538?

How do I fix CVE-2026-36538?

No fix has been published for CVE-2026-36538 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-36538 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-36538 exists.

Sources

Also known as GHSA-hq6p-v7h2-m9cg.

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