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
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 87%
CISA-KEV: Not listedEPSS: 87%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
9.8(medium)
EG Risk
94(Attend)
EG Risk 94/100SSVC: Attend

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%
Exploitation87% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
99.7%
KEV
Not listed

Published

September 5, 2022

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Jun 9, 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🟡 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 6× in last 7d / 19× 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. 2026-07-24 14:15 UTCEPSS rescore
  2. 2026-07-24 14:15 UTCEPSS rescore
  3. 2026-07-23 02:11 UTCEG score recompute
  4. 2026-07-22 22:58 UTCEG score recompute
  5. 2026-07-22 14:06 UTCEPSS rescore
  6. 2026-07-22 14:06 UTCEPSS rescore
  7. 2026-07-18 10:03 UTCEPSS rescore
  8. 2026-07-18 10:02 UTCEPSS rescore
  9. 2026-07-13 22:27 UTCEPSS rescore
  10. 2026-07-13 06:11 UTCEPSS rescore
  11. 2026-07-13 06:11 UTCEPSS rescore
  12. 2026-07-12 05:44 UTCEPSS rescore
  13. 2026-07-12 05:44 UTCEPSS rescore
  14. 2026-07-08 15:12 UTCEPSS rescore
  15. 2026-07-06 16:25 UTCEPSS rescore
  16. 2026-07-06 16:25 UTCEPSS rescore
  17. 2026-07-04 06:29 UTCEPSS rescore
  18. 2026-07-04 06:29 UTCEPSS rescore
  19. 2026-06-27 03:07 UTCEPSS rescore
  20. 2026-06-24 14:03 UTCEPSS rescore
  21. 2026-06-24 14:03 UTCEPSS rescore
  22. 2026-06-23 21:31 UTCEPSS rescore
  23. 2026-06-23 21:31 UTCEPSS rescore
  24. 2026-06-18 17:51 UTCEPSS rescore
  25. 2026-06-18 17:51 UTCEPSS rescore
Show 14 more
  1. 2026-06-17 17:51 UTCEPSS rescore
  2. 2026-06-17 17:51 UTCEPSS rescore
  3. 2026-06-16 17:51 UTCEPSS rescore
  4. 2026-06-16 17:51 UTCEPSS rescore
  5. 2026-06-15 17:46 UTCEPSS rescore
  6. 2026-06-13 22:58 UTCEPSS rescore
  7. 2026-06-06 13:46 UTCEPSS rescore
  8. 2026-06-06 13:46 UTCEPSS rescore
  9. 2026-05-28 13:43 UTCEPSS rescore
  10. 2026-05-28 13:43 UTCEPSS rescore
  11. 2026-05-28 13:43 UTCEPSS rescore
  12. 2026-05-25 16:02 UTCEG score recompute
  13. 2026-05-25 16:02 UTCGHSA enrichment
  14. 2026-05-24 16:51 UTCEPSS rescore

Publicly available exploits

(7 references)

Working exploit code is in the public domain (1 Metasploit module) (4 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCLaburity/CVE-2022-31814
    First seen Jul 23, 2024

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

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

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

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

    CVE-2022-31814

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

    pfBlockerNG 2.1.4_26 - Remote Code Execution (RCE)

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

    CVE-2022-31814 Exploitation Toolkit.

    Open source ↗
  • Metasploitexploit/unix/http/pfsense_pfblockerng_webshell✓ verified
    First seen Sep 5, 2022

    pfSense plugin pfBlockerNG unauthenticated RCE as root

    Open source ↗
  • Nucleihttp/cves/2022/CVE-2022-31814.yaml
    First seen Jan 1, 2022

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

    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 in the National Vulnerability Database 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. FIRST EPSS estimates a 99.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-31814, 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

Explore the affected products and dependency analysis for CVE-2022-31814

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