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Vulnerability record · CVE-2022-40624 · published 20 December 2022

CVE-2022-40624: Pfsense pfblockerng os command injection vulnerability

Pfsense · Pfblockerng

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.

9.8 CVSS 3.1 Critical EPSS 17% · top 3.0% CWE-78 · OS command injection
9.8CVSS 3.1 base score
17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html Vendor Advisory
https://github.com/dhammon/pfBlockerNg-CVE-2022-40624 ExploitThird Party Advisory
https://github.com/dhammon/pfBlockerNg-RCE Broken Link
https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html Vendor Advisory
https://github.com/dhammon/pfBlockerNg-CVE-2022-40624 ExploitThird Party Advisory
https://github.com/dhammon/pfBlockerNg-RCE Broken Link

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Source: NIST National Vulnerability Database (record CVE-2022-40624), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.