CVE-2021-4181: Debian Linux

High severity, CVSS 7.5. EPSS: 3.8% chance of exploitation in the next 30 days.

Crash in the Sysdig Event dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file

Affected products

• Debian Debian Linux: version 9.0 only
• Fedoraproject Fedora: version 34 only; version 35 only
• Oracle HTTP Server: version 12.2.1.3.0 only; version 12.2.1.4.0 only
• Oracle ZFS Storage Appliance Kit: version 8.8 only
• Wireshark Wireshark: from 3.4.0, before 3.4.11 (fixed in 3.4.11); version 3.6.0 only

Published 2021-12-30. Last modified 2026-06-17.