CVE-2023-0667 Wireshark MSMMS parsing buffer overflow

Medium 6.5 Published 7 Jun 2023 Updated 3 Nov 2025

An attacker can trigger a heap-based buffer overflow in Wireshark via crafted MSMMS packets, potentially executing code in the application context.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2023-0667?

CVE-2023-0667 is a medium-severity memory corruption vulnerability in Wireshark Wireshark, published on 7 Jun 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Due to failure in validating the length provided by an attacker-crafted MSMMS packet, Wireshark version 4.0.5 and prior, in an unusual configuration, is susceptible to a heap-based buffer overflow, and possibly code execution in the context of the process running Wireshark

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2023-0667?

It affects 1 product.

Linux distribution packages (1)

wireshark openSUSE:Tumbleweed All versions 4.0.6-3.1

Products include Wireshark Wireshark.

How do I fix CVE-2023-0667?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-0667 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0667 exists.

All Wireshark Wireshark vulnerabilities

Sources

Also known as AZL-27144, DEBIAN-CVE-2023-0667, GHSA-m7h5-4hfx-r2mh, OESA-2023-1363, OESA-2023-1371, OESA-2023-1372 and 2 more.