CVE-2022-40624

CRITICALNVD 9.89.8—Weaponized

9.8

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 v3: 9.8
EG Score: 9.8(medium)
EPSS: 99.4%
KEV: Not listed

Published

December 20, 2022

Last Modified

April 17, 2025

References (6)

cve@mitrehttps://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html
cve@mitrehttps://github.com/dhammon/pfBlockerNg-CVE-2022-40624
cve@mitrehttps://github.com/dhammon/pfBlockerNg-RCE
af854a3a-2127-422b-91ae-364da2661108https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html
af854a3a-2127-422b-91ae-364da2661108https://github.com/dhammon/pfBlockerNg-CVE-2022-40624
af854a3a-2127-422b-91ae-364da2661108https://github.com/dhammon/pfBlockerNg-RCE

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-78OS Command Injection

Data Freshness Timeline

(refreshed 7× in last 7d / 13× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-05 22:46 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-25 10:12 UTCEG score recompute
2026-05-25 10:12 UTCGHSA enrichment

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCdhammon/pfBlockerNg-CVE-2022-40624
First seen Sep 15, 2022
Open source ↗
Nucleihttp/cves/2022/CVE-2022-40624.yaml
First seen Jan 1, 2022
pfSense pfBlockerNG - OS Command Injection
Open source ↗

Frequently asked(5)

What is CVE-2022-40624?

CVE-2022-40624 is a critical vulnerability published on December 20, 2022. 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.

When was CVE-2022-40624 disclosed?

CVE-2022-40624 was first published in the National Vulnerability Database on December 20, 2022, with the most recent update on April 17, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-40624 actively exploited?

CVE-2022-40624 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-40624?

CVE-2022-40624 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2022-40624?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-40624, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-40624

Explore →

Is Your Infrastructure Affected by CVE-2022-40624?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2022-40624

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-40624?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (6)

Frequently asked(5)

Related CVEs(same CWE)