CVE-2026-19696 Out-of-bounds Write in Wireshark
An out-of-bounds write in Wireshark's file parsers allows attackers to cause a denial of service on Windows systems.
- 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-2026-19696?
CVE-2026-19696 is a medium-severity memory corruption vulnerability in Wireshark Wireshark, published on 13 Aug 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
Ixia IxVeriWave and Vector Informatik BLF file parser crashes in 4.6.0 to 4.6.7 allows denial of service on Windows
Weakness: CWE-787
Which versions are affected by CVE-2026-19696?
It affects 1 product.
Products include Wireshark Wireshark.
How do I fix CVE-2026-19696?
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-2026-19696 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19696 exists.
Other vulnerabilities in Wireshark Wireshark
Sources
Also known as DEBIAN-CVE-2026-19696, GHSA-5rr4-x8fc-q7fc, UBUNTU-CVE-2026-19696.