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CVE-2022-31814

93
FAUCET Score

CVE-2022-31814 is a critical remote code execution vulnerability affecting pfSense pfBlockerNG versions through 2.1.4_26, allowing unauthenticated attackers to execute arbitrary OS commands as root via shell metacharacters in the HTTP Host header. This vulnerability carries a CVSS score of 9.8 (Critical) due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. Exploit code is publicly available, including Metasploit modules and Nuclei templates, and it has garnered significant community discussion, indicating a high likelihood of exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.1.4_26CPE matchmatch criteria
cpe:2.3:a:netgate:pfblockerng:*:*:*:*:*:pfsense:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
87.25%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: pfSense plugin pfBlockerNG unauthenticated RCE as root · Sep 5, 2022
Nuclei: CVE-2022-31814 · Sep 19, 2022
ExploitDB: EDB-51032 · Feb 20, 2023
This CVE's current EPSS score of 0.8725 is in the 99th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.html
ExploitThird Party AdvisoryVDB Entry
packetstormsecurity.com / files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html
docs.netgate.com / pfsense/en/latest/packages/pfblocker.html
Release NotesVendor Advisory
github.com / pfsense/FreeBSD-ports/pull/1169
github.com / pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7e
ihteam.net / advisory/pfblockerng-unauth-rce-vulnerability
ExploitTechnical DescriptionThird Party Advisory