CVE-2023-40798 Memory corruption in n/a

High 8.8 Published 25 Aug 2023 Updated 2 Oct 2024

An authenticated attacker can trigger a stack overflow in Tenda AC23 routers via specific form functions, potentially leading to code execution.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-40798?

CVE-2023-40798 is a high-severity memory corruption vulnerability in n/a, published on 25 Aug 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In Tenda AC23 v16.03.07.45_cn, the formSetIPv6status and formGetWanParameter functions do not authenticate user input parameters, resulting in a post-authentication stack overflow vulnerability.

Weakness: CWE-20

Which versions are affected by CVE-2023-40798?

It affects 1 product.

Products include Tenda Ac23 Firmware.

How do I fix CVE-2023-40798?

No fix has been published for CVE-2023-40798 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-2023-40798 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-40798 exists.

Sources

Also known as GHSA-mmrw-88mx-92rq.