CVE-2023-38940 Memory corruption in n/a

Critical 9.8 Published 7 Aug 2023 Updated 11 Oct 2024

A stack overflow in Tenda routers allows attackers to execute arbitrary code or cause denial of service via the ssid parameter.

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-2023-38940?

CVE-2023-38940 is a critical memory corruption vulnerability in n/a, published on 7 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Tenda F1203 V2.0.1.6, FH1203 V2.0.1.6 and FH1205 V2.0.0.7(775) were discovered to contain a stack overflow via the ssid parameter in the form_fast_setting_wifi_set function.

Weakness: CWE-787

Which versions are affected by CVE-2023-38940?

It affects 3 products.

Products include Tenda F1203 Firmware, Tenda Fh1203 Firmware, Tenda Fh1205 Firmware.

How do I fix CVE-2023-38940?

No fix has been published for CVE-2023-38940 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-2023-38940 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-38940 exists.

Sources

Also known as GHSA-33c4-f7cm-95m7.