CVE-2022-40942 Memory corruption in n/a

Critical 9.8 Published 28 Sep 2022 Updated 21 May 2025

A stack overflow vulnerability in the Tenda TX3 router allows attackers to execute arbitrary code or cause a denial of service.

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-2022-40942?

CVE-2022-40942 is a critical memory corruption vulnerability in n/a, published on 28 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Tenda TX3 US_TX3V1.0br_V16.03.13.11 is vulnerable to stack overflow via compare_parentcontrol_time.

Weakness: CWE-787

Which versions are affected by CVE-2022-40942?

It affects 1 product.

Products include Tenda Tx3 Firmware.

How do I fix CVE-2022-40942?

No fix has been published for CVE-2022-40942 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2022-40942 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-40942 exists.

Sources

Also known as GHSA-vr8w-qg3x-w7fv.