CVE-2021-21730 Auth bypass in ZXHN H168N

Critical 9.8 Published Updated

Attackers can brute force credentials to gain unauthorized CLI access on ZTE ZXHN H168N routers, potentially leading to full device control.

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-2021-21730?

CVE-2021-21730 is a critical authentication bypass vulnerability in ZXHN H168N, published on 13 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A ZTE product is impacted by improper access control vulnerability. The attacker could exploit this vulnerability to access CLI by brute force attacks.This affects: ZXHN H168N V3.5.0_TY.T6

Which versions are affected by CVE-2021-21730?

It affects 1 product.

Products include Zte Zxhn H168n Firmware.

How do I fix CVE-2021-21730?

No fix has been published for CVE-2021-21730 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-2021-21730 being exploited?

There is no known exploitation of CVE-2021-21730 in the wild and no public exploit code.

Sources

Also known as GHSA-9xvw-8r73-2f95.

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