Wireshark 4.6.0-4.6.4 WebSocket Dissector DoS via Protocol Crash
CVE-2026-6869 Published on April 30, 2026
Improperly Controlled Sequential Memory Allocation in Wireshark
WebSocket protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Vulnerability Analysis
CVE-2026-6869 can be exploited with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2026-6869. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Stack Exhaustion Vulnerability?
The product manages a group of objects or resources and performs a separate memory allocation for each object, but it does not properly limit the total amount of memory that is consumed by all of the combined objects.
CVE-2026-6869 has been classified to as a Stack Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-6869
Want to know whenever a new CVE is published for Wireshark? stack.watch will email you.
Affected Versions
Wireshark Foundation Wireshark:- Version 4.6.0 and below 4.6.5 is affected.
- Version 4.4.0 and below 4.4.15 is affected.