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TI-2018-14770 Aliases CVE-2018-20799GHSA-556r-ph87-2m55

In pfSense 2.4.4_1, blocking of source IP addresses on the basis of failed HTTPS…

Priority LOW 36Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.0159 75th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:netgate:pfsense:2.4.4:p1:*:*:*:*:*:*2.4.4 p1VulnerableNetgate
  • cpe:2.3:a:netgate:pfsense:2.4.4:p1:*:*:*:*:*:* Versions 2.4.4 p1 Vulnerable ·Netgate

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-20799
  2. 2026-10-03 Alias added: GHSA-556r-ph87-2m55

References

Exploit 1

  • TI-2023-12003 A command injection vulnerability in the function restore_rrddata() of Netgate pfSense… CVSS 3.1HIGH 8.8
  • TI-2024-31010 A cross-site scripting (XSS) vulnerability in pfsense v2.5.2 allows attackers to execute… CVSS 3.1CRITICAL 9.3
  • TI-2023-26046 An issue in Netgate pfSense Plus v.23.05.1 and before and pfSense CE v.2.7.0 allows a… CVSS 3.1HIGH 8.8
  • TI-2023-22567 An issue in Netgate pfSense v.2.7.0 allows a remote attacker to execute arbitrary code… CVSS 3.1HIGH 8.8
  • TI-2019-12464 diag_command.php in pfSense 2.4.4-p3 allows CSRF via the txtCommand or txtRecallBuffer… CVSS 3.1HIGH 8.8
  • TI-2018-02989 OS command injection in Netgate pfSense CVSS 3.1HIGH 7.2
See all 48 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences