CVE-2023-1994 Denial of service in Wireshark

Medium 6.3 Published 12 Apr 2023 Updated 3 Nov 2025

Attackers can cause a denial of service in Wireshark by injecting packets or providing crafted capture files, affecting network analysts.

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-2023-1994?

CVE-2023-1994 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 12 Apr 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

GQUIC dissector crash in Wireshark 4.0.0 to 4.0.4 and 3.6.0 to 3.6.12 allows denial of service via packet injection or crafted capture file

Weakness: CWE-400, CWE-476

Which versions are affected by CVE-2023-1994?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Wireshark Wireshark.

How do I fix CVE-2023-1994?

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-2023-1994 being exploited?

There is no known exploitation of CVE-2023-1994 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2023-1994, GHSA-737h-r3q7-c58r, UBUNTU-CVE-2023-1994.