CVE-2026-5402

A flaw was found in the TLS protocol dissector in Wireshark. This issue occurs when malformed packets are decoded from a pcap file or the network, causing a heap-based buffer overflow, resulting in a denial of service or potentially in code execution.

This issue will cause a crash in Wireshark and potentially result in code execution. This flaw can only be exploited when a malformed pcap file is processed. Due to these reasons, this vulnerability has been rated with an important severity.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.