CVE-2023-29994 Memory corruption in n/a

High 7.5 Published 4 May 2023 Updated 29 Jan 2025

A heap overflow in NanoMQ allows attackers to execute arbitrary code or cause denial of service via crafted MQTT packets.

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-2023-29994?

CVE-2023-29994 is a high-severity memory corruption vulnerability in n/a, published on 4 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In NanoMQ v0.15.0-0, Heap overflow occurs in read_byte function of mqtt_code.c.

Weakness: CWE-787

Which versions are affected by CVE-2023-29994?

It affects 1 product.

Products include Emqx Nanomq.

How do I fix CVE-2023-29994?

No fix has been published for CVE-2023-29994 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-2023-29994 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-29994 exists.

Sources

Also known as GHSA-39xg-53hj-p9pw.