wnpa-sec-2026-14 · TLS dissector crash and possible code execution
Summary
Name: TLS dissector crash and possible code execution
Docid: wnpa-sec-2026-14
Date: April 29, 2026
Affected versions: 4.6.0 to 4.6.4
Fixed versions: 4.6.5
References:
Wireshark issue 21090.
CVE-2026-5402.
Details
Description
The TLS dissector could crash and possibly execute untrusted code.
Impact
Discovered by Duc Anh Nguyen. We are unaware of any exploits for this issue. It may be possible to make Wireshark crash or execute untrusted code by injecting a malformed packet onto the wire or by convincing someone to read a malformed packet trace file.
Resolution
Upgrade to Wireshark 4.6.5 or later.
