CVE-2018-20799: Netgate Pfsense

High severity, CVSS 7.5. EPSS: 1.6% chance of exploitation in the next 30 days.

In pfSense 2.4.4_1, blocking of source IP addresses on the basis of failed HTTPS authentication is inconsistent with blocking of source IP addresses on the basis of failed SSH authentication (the behavior does not match the sshguard documentation), which might make it easier for attackers to bypass intended access restrictions.

Affected products

• Netgate Pfsense: version 2.4.4 only

Published 2019-03-01. Last modified 2026-06-17.