CVE-2026-19696
Received Received - Intake

IxVeriWave and BLF File Parser DoS Vulnerability

Publication date: 2026-08-13

Last updated on: 2026-08-13

Assigner: GitLab Inc.

Description
Ixia IxVeriWave and Vector Informatik BLF file parser crashes in 4.6.0 to 4.6.7 allows denial of service on Windows

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Meta Information

Published
2026-08-13
Last Modified
2026-08-13
Generated
2026-08-13
AI Q&A
2026-08-13
EPSS Evaluated
N/A
NVD
CVE-2026-19696
EUVD
EUVD-2026-57743

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
wireshark wireshark From 4.6.0 (inc) to 4.6.7 (inc)
wireshark wireshark 4.6.8

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

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Executive Summary

CVE-2026-19696 is an out-of-bounds write vulnerability in Wireshark versions 4.6.0 to 4.6.7 affecting Windows systems. It occurs in the phtoleu16() function when compiled with MSVC, Intel Classic, or Intel LLVM compilers. The function incorrectly writes 4 bytes instead of 2, causing buffer overflows in code paths like RTP audio export and NetMon file writing.

Detection Guidance

This vulnerability can be detected by checking the Wireshark version installed on your system. If you are running Wireshark versions 4.6.0 to 4.6.7 on Windows, your system may be vulnerable. Run 'wireshark -v' in the command line to check the version.

Impact Analysis

This vulnerability could allow a denial of service by crashing Wireshark when processing malformed files. An attacker might trick a user into opening a specially crafted file to trigger the crash. The impact is primarily on system availability due to memory corruption.

Mitigation Strategies

Upgrade Wireshark to version 4.6.8 or later immediately. This resolves the issue by fixing the out-of-bounds write in the phtoleu16() function. Avoid opening untrusted BLF or packet capture files until the update is applied.

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