CVE-2026-76926 Reachable Assertion in Wireshark
A reachable assertion in the BUSMASTER file parser allows attackers to cause a denial of service via a crafted file.
- 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-2026-76926?
CVE-2026-76926 is a low-severity denial of service vulnerability in Wireshark Wireshark, published on 19 Aug 2026. 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
BUSMASTER file parser abnormal exit in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Weakness: CWE-617
Which versions are affected by CVE-2026-76926?
It affects 1 product.
Products include Wireshark Wireshark.
How do I fix CVE-2026-76926?
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-2026-76926 being exploited?
There is no known exploitation of CVE-2026-76926 in the wild and no public exploit code.
Other vulnerabilities in Wireshark Wireshark
Sources
Also known as AZL-96821, DEBIAN-CVE-2026-76926, GHSA-8hhm-54fq-9wrx, MINI-ch9x-56jg-fqrf, UBUNTU-CVE-2026-76926.