CVE-2025-9817: Wireshark

High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days.

SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service

Affected products

• Wireshark Wireshark: from 4.4.0, up to and including 4.4.8; version 4.4.9 only

Published 2025-09-03. Last modified 2026-09-26.