Wireshark 4.6.x BLF Parser Crash DoS on Windows
CVE-2026-19696 Published on August 13, 2026
Out-of-bounds Write in Wireshark
Ixia IxVeriWave and Vector Informatik BLF file parser crashes in 4.6.0 to 4.6.7 allows denial of service on Windows
Vulnerability Analysis
CVE-2026-19696 is exploitable 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-2026-19696. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2026-19696 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2026-19696
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Affected Versions
Wireshark Foundation Wireshark:- Version 4.6.0 and below 4.6.8 is affected.