CVE-2023-0411 Denial of service in Wireshark

Medium 6.3 Published 24 Jan 2023 Updated 3 Nov 2025

Attackers can cause denial of service in Wireshark via excessive loops in dissectors triggered by crafted packets or capture files.

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-2023-0411?

CVE-2023-0411 is a medium-severity denial of service vulnerability in Wireshark Wireshark, published on 24 Jan 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

Excessive loops in multiple dissectors in Wireshark 4.0.0 to 4.0.2 and 3.6.0 to 3.6.10 and allows denial of service via packet injection or crafted capture file

Weakness: CWE-834

Which versions are affected by CVE-2023-0411?

It affects 1 product.

Products include Wireshark Wireshark.

How do I fix CVE-2023-0411?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2023-0411 being exploited?

There is no known exploitation of CVE-2023-0411 in the wild and no public exploit code.

All Wireshark Wireshark vulnerabilities

Sources

Also known as DEBIAN-CVE-2023-0411, GHSA-q67r-2p55-6v2v, UBUNTU-CVE-2023-0411.