CVE-2022-31814

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-09-06. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8EG
EchelonGraph verdictMitigate this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 92%
  • Public exploit code is available (Metasploit, ssvc poc, epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 92%CVSS: 9.8Exploit: Metasploit · ssvc poc · epss top5pct · epss high · public exploitExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

pfSense pfBlockerNG through 2.1.4_26 allows remote attackers to execute arbitrary OS commands as root via shell metacharacters in the HTTP Host header. NOTE: 3.x is unaffected.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
96
EG Risk 96/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation92% × 40%
Automatability100% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.
EPSS PROB
92%
EPSS %ILE
99th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 5, 2022

Last Modified

November 21, 2024

Advisory Details (6)

Auto-updated Oct 10, 2026
🔬 Proof of concept available. Upstream fix merged — awaiting tagged release. Sources: github_pr.
github_pr

pfBlockerNG v2.1.4_27

Fix merged in pfsense/FreeBSD-ports PR #1169 on 2022-06-05 — awaiting tagged release

https://github.com/pfsense/FreeBSD-ports/pull/1169
generic

pfBlocker-NG Package | pfSense Documentation

https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html
generic

Packet Storm

http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html
generic

Packet Storm

http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.html
generic🟡 PoC Available

pfBlockerNG Unauth RCE Vulnerability - IHTeam Security Blog

https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/
github_pr

pfBlockerNG v2.1.4_27

Fix merged in pfsense/FreeBSD-ports PR #1169 on 2022-06-05 — awaiting tagged release

https://github.com/pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7e

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 2× in last 7d / 7× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-10 19:56 UTCEPSS rescore
  2. 2026-10-07 23:45 UTCEPSS rescore
  3. 2026-09-30 15:55 UTCEG score recompute
  4. 2026-09-24 14:00 UTCEPSS rescore
  5. 2026-09-22 14:44 UTCEPSS rescore
  6. 2026-09-18 19:24 UTCEPSS rescore
  7. 2026-09-11 09:33 UTCEPSS rescore
  8. 2026-09-08 21:57 UTCEPSS rescore
  9. 2026-09-06 13:45 UTCEPSS rescore
  10. 2026-09-05 15:25 UTCEPSS rescore
  11. 2026-09-04 05:04 UTCEPSS rescore
  12. 2026-09-02 14:09 UTCEPSS rescore
  13. 2026-08-30 19:14 UTCEPSS rescore
  14. 2026-08-30 01:19 UTCEPSS rescore
  15. 2026-08-28 21:38 UTCEPSS rescore
  16. 2026-08-26 14:43 UTCEPSS rescore
  17. 2026-08-24 14:13 UTCEPSS rescore
  18. 2026-08-20 22:52 UTCEPSS rescore
  19. 2026-08-19 17:01 UTCEPSS rescore
  20. 2026-08-18 13:45 UTCEPSS rescore
  21. 2026-08-16 02:11 UTCEPSS rescore
  22. 2026-08-12 13:48 UTCEPSS rescore
  23. 2026-08-11 13:38 UTCEPSS rescore
  24. 2026-08-04 15:07 UTCEPSS rescore
  25. 2026-08-04 10:35 UTCEPSS rescore
Show 41 more
  1. 2026-07-30 16:25 UTCEPSS rescore
  2. 2026-07-25 14:15 UTCEPSS rescore
  3. 2026-07-24 14:15 UTCEPSS rescore
  4. 2026-07-24 14:15 UTCEPSS rescore
  5. 2026-07-23 02:11 UTCEG score recompute
  6. 2026-07-22 22:58 UTCEG score recompute
  7. 2026-07-22 14:06 UTCEPSS rescore
  8. 2026-07-22 14:06 UTCEPSS rescore
  9. 2026-07-18 10:03 UTCEPSS rescore
  10. 2026-07-18 10:02 UTCEPSS rescore
  11. 2026-07-13 22:27 UTCEPSS rescore
  12. 2026-07-13 06:11 UTCEPSS rescore
  13. 2026-07-13 06:11 UTCEPSS rescore
  14. 2026-07-12 05:44 UTCEPSS rescore
  15. 2026-07-12 05:44 UTCEPSS rescore
  16. 2026-07-08 15:12 UTCEPSS rescore
  17. 2026-07-06 16:25 UTCEPSS rescore
  18. 2026-07-06 16:25 UTCEPSS rescore
  19. 2026-07-04 06:29 UTCEPSS rescore
  20. 2026-07-04 06:29 UTCEPSS rescore
  21. 2026-06-27 03:07 UTCEPSS rescore
  22. 2026-06-24 14:03 UTCEPSS rescore
  23. 2026-06-24 14:03 UTCEPSS rescore
  24. 2026-06-23 21:31 UTCEPSS rescore
  25. 2026-06-23 21:31 UTCEPSS rescore
  26. 2026-06-18 17:51 UTCEPSS rescore
  27. 2026-06-18 17:51 UTCEPSS rescore
  28. 2026-06-17 17:51 UTCEPSS rescore
  29. 2026-06-17 17:51 UTCEPSS rescore
  30. 2026-06-16 17:51 UTCEPSS rescore
  31. 2026-06-16 17:51 UTCEPSS rescore
  32. 2026-06-15 17:46 UTCEPSS rescore
  33. 2026-06-13 22:58 UTCEPSS rescore
  34. 2026-06-06 13:46 UTCEPSS rescore
  35. 2026-06-06 13:46 UTCEPSS rescore
  36. 2026-05-28 13:43 UTCEPSS rescore
  37. 2026-05-28 13:43 UTCEPSS rescore
  38. 2026-05-28 13:43 UTCEPSS rescore
  39. 2026-05-25 16:02 UTCEG score recompute
  40. 2026-05-25 16:02 UTCGHSA enrichment
  41. 2026-05-24 16:51 UTCEPSS rescore

Publicly available exploits

(7 references)

Public exploit code is referenced for this CVE (1 Metasploit module, 1 Exploit-DB entry, 4 GitHub PoCs), as is 1 Nuclei detection template. A detection template checks whether a system is affected; it is not necessarily exploit code. Defenders should treat patch urgency accordingly.

  • Metasploitexploit/unix/http/pfsense_pfblockerng_webshell✓ verified
    Published Oct 13, 2022

    pfSense plugin pfBlockerNG unauthenticated RCE as root

    Open source ↗
  • GitHub PoCLaburity/CVE-2022-31814
    Published Jul 23, 2024

    Updated Exploit - pfBlockerNG <= 2.1.4_26 Unauth RCE (CVE-2022-31814)

    Open source ↗
  • GitHub PoCChocapikk/CVE-2022-31814
    Published Mar 26, 2023

    pfBlockerNG <= 2.1.4_26 Unauth RCE (CVE-2022-31814)

    Open source ↗
  • GitHub PoCdrcayber/RCE
    Published Mar 5, 2023

    CVE-2022-31814

    Open source ↗
  • Exploit-DBEDB-51032
    Published Feb 20, 2023

    pfBlockerNG 2.1.4_26 - Remote Code Execution (RCE)

    Open source ↗
  • Nucleihttp/cves/2022/CVE-2022-31814.yaml
    Published Sep 26, 2022

    pfSense pfBlockerNG <=2.1..4_26 - OS Command Injection

    Open source ↗
  • GitHub PoCEvergreenCartoons/SenselessViolence
    Published Sep 18, 2022

    CVE-2022-31814 Exploitation Toolkit.

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-31814?
CVE-2022-31814 is a critical vulnerability published on September 5, 2022. pfSense pfBlockerNG through 2.1.4_26 allows remote attackers to execute arbitrary OS commands as root via shell metacharacters in the HTTP Host header. NOTE: 3.x is unaffected.
When was CVE-2022-31814 disclosed?
CVE-2022-31814 was first published on September 5, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-31814 actively exploited?
CVE-2022-31814 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model classifies it as weaponized: a functional public exploit exists. FIRST EPSS estimates a 92% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2022-31814?
CVE-2022-31814 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2022-31814?
An upstream fix for CVE-2022-31814 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix.

Dependency Blast Radius

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