CVE-2022-31814: Netgate Pfblockerng

Critical severity, CVSS 9.8. EPSS: 91.9% chance of exploitation in the next 30 days.

pfSense pfBlockerNG through 2.1.4_26 allows remote attackers to execute arbitrary OS commands as root via shell metacharacters in the HTTP Host header. NOTE: 3.x is unaffected.

Affected products

• Netgate Pfblockerng: up to and including 2.1.4_26

Published 2022-09-05. Last modified 2026-06-17.