CVE-2022-40103 Memory corruption in n/a

Medium 5.5 Published 23 Sep 2022 Updated 22 May 2025

Attackers can cause a Denial of Service on Tenda i9 routers by exploiting a buffer overflow in the formSetAutoPing function.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2022-40103?

CVE-2022-40103 is a medium-severity memory corruption vulnerability in n/a, published on 23 Sep 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Tenda i9 v1.0.0.8(3828) was discovered to contain a buffer overflow via the formSetAutoPing function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted string.

Weakness: CWE-787

Which versions are affected by CVE-2022-40103?

It affects 1 product.

Products include Tenda I9 Firmware.

How do I fix CVE-2022-40103?

No fix has been published for CVE-2022-40103 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-2022-40103 being exploited?

There is no known exploitation of CVE-2022-40103 in the wild and no public exploit code.

Sources

Also known as GHSA-27m4-83f2-2x77.