CVE-2018-20799

7.5 highEPSS 1.6%

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.

Severity

CVSS 3.0

7.5 high

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS: 1.6% chance of exploitation in the next 30 days; higher than 75% of CVEs (scores of 2026-10-31)
Published: 2019-03-01
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

netgate:pfsense

References

https://redmine.pfsense.org/issues/9223
https://redmine.pfsense.org/issues/9223

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