CVE-2026-15174 Heap-based Buffer Overflow in Wireshark
A heap-based buffer overflow in the Catapult DCT2000 dissector allows attackers to cause a denial of service via crafted packets.
- 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-2026-15174?
CVE-2026-15174 is a medium-severity memory corruption 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
Catapult DCT2000 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-122
Which versions are affected by CVE-2026-15174?
It affects 1 product.
Products include Wireshark Wireshark.
How do I fix CVE-2026-15174?
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-2026-15174 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15174 exists.
Other vulnerabilities in Wireshark Wireshark
Sources
Also known as AZL-92132, DEBIAN-CVE-2026-15174, GHSA-x9cw-h8q8-q64c, MINI-8c49-8mmf-xmcf, UBUNTU-CVE-2026-15174.