CVE-2021-22191: Debian Linux

High severity, CVSS 8.8. EPSS: 3.7% chance of exploitation in the next 30 days.

Improper URL handling in Wireshark 3.4.0 to 3.4.3 and 3.2.0 to 3.2.11 could allow remote code execution via via packet injection or crafted capture file.

Affected products

• Debian Debian Linux: version 9.0 only
• Oracle ZFS Storage Appliance: version 8.8 only
• Wireshark Wireshark: from 3.2.0, up to and including 3.2.11; from 3.4.0, up to and including 3.4.3

Published 2021-03-15. Last modified 2026-06-17.