CVE-2022-40624: Pfsense Pfblockerng

Critical severity, CVSS 9.8. EPSS: 17.3% chance of exploitation in the next 30 days.

pfSense pfBlockerNG through 2.1.4_27 allows remote attackers to execute arbitrary OS commands as root via the HTTP Host header, a different vulnerability than CVE-2022-31814.

Affected products

• Pfsense Pfblockerng: before 2.1.4_27 (fixed in 2.1.4_27)

Published 2022-12-20. Last modified 2026-06-17.