Wireshark DoS via zlib Decompress Engine (v4.6.0-4.6.4, v4.4.0-4.4.14)
CVE-2026-6535 Published on April 30, 2026
Improperly Controlled Sequential Memory Allocation in Wireshark
Dissection engine zlib decompression 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-2026-6535 can be exploited with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. 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-2026-6535 has been classified to as a Stack Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-6535
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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.