CVE-2018-9258: Debian Linux

High severity, CVSS 7.5. EPSS: 1.9% chance of exploitation in the next 30 days.

In Wireshark 2.4.0 to 2.4.5, the TCP dissector could crash. This was addressed in epan/dissectors/packet-tcp.c by preserving valid data sources.

Affected products

• Debian Debian Linux: version 7.0 only
• Wireshark Wireshark: from 2.4.0, up to and including 2.4.5

Published 2018-04-04. Last modified 2026-06-17.