CVE-2026-15172 Unchecked Input for Loop Condition in Wireshark

Medium 5.5 Published 8 Jul 2026 Updated 9 Jul 2026

A crash in the FMP/NOTIFY protocol dissector allows attackers to cause a denial of service in Wireshark.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2026-15172?

CVE-2026-15172 is a medium-severity denial of service vulnerability in Wireshark Wireshark, published on 8 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

FMP/NOTIFY protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service

Weakness: CWE-606

Which versions are affected by CVE-2026-15172?

It affects 1 product.

Products include Wireshark Wireshark.

How do I fix CVE-2026-15172?

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-2026-15172 being exploited?

There is no known exploitation of CVE-2026-15172 in the wild and no public exploit code.

All Wireshark Wireshark vulnerabilities

Sources

Also known as AZL-92135, DEBIAN-CVE-2026-15172, GHSA-45fx-qq48-m87m, MINI-7684-2942-8pm7, UBUNTU-CVE-2026-15172.