CVE-2023-40797 Memory corruption in n/a

High 8.8 Published 25 Aug 2023 Updated 2 Oct 2024

A stack overflow in the Tenda AC23 router allows authenticated attackers to execute arbitrary code or cause a denial of service.

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-2023-40797?

CVE-2023-40797 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 sub_4781A4 function does not validate the parameters entered by the user, resulting in a post-authentication stack overflow vulnerability.

Weakness: CWE-20

Which versions are affected by CVE-2023-40797?

It affects 1 product.

Products include Tenda Ac23 Firmware.

How do I fix CVE-2023-40797?

No fix has been published for CVE-2023-40797 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-2023-40797 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-40797 exists.

Sources

Also known as GHSA-38rw-jgwg-5764.