Home/CVE/pfSense pfBlockerNG through 2.1.4_27 allows remote attackers to execute arbitrary OS commands as root via the HTTP Host
CVE

CVE-2022-40624

pfSense pfBlockerNG through 2.1.4_27 allows remote attackers to execute arbitrary OS commands as root via the HTTP Host

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.

CRITICAL · CVSS 9.8 EPSS 0.84655
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 1% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
▤

Affected Products & Versions

1
pfsense pfblockerng< 2.1.4_27
⚠

Public Exploits & PoCs

2
nucleipfSense pfBlockerNG - OS Command Injectioncritical
pocgithub.com · pfBlockerNg-CVE-2022-40624github.com
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD20 Dec 2022 · 03:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.htmlVendor Advisory
https://github.com/dhammon/pfBlockerNg-RCEBroken Link
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