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.
CVE-2022-31814
“—” beside the score: it is equal to NVD's CVSS score.
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-09-06. NVD baseline CVSS 9.8; sources differ by 0.0.
Also known asEUVD-2022-53199 (ENISA EUVD) · GHSA-hr8v-98c3-7p3x (GitHub Security Advisories)Source: ENISA EUVD
- High exploitation likelihood — EPSS 92%
- Public exploit code is available (Metasploit, other public proof-of-concept code)
An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.
- CVSS v3
- 9.8
- EG Score
- 9.8CRITICALmedium confidence
- EG Risk
- 96EG Risk 96/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity98% × 45%Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation92% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: An upstream fix is merged but not yet in a tagged release. Until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high, then apply it. - EPSS PROB
- 92%
- EPSS %ILE
- 99th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.
- EG Severity
- 9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 92% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-02). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.
An upstream fix is merged but not yet in a tagged release. Until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high, then apply it.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.
No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
September 5, 2022
Last Modified
November 21, 2024
Advisory Details (6)
Auto-updated Oct 10, 2026pfBlockerNG 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/1169pfBlocker-NG Package | pfSense Documentation
https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.htmlPacket Storm
http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.htmlPacket Storm
http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.htmlpfBlockerNG Unauth RCE Vulnerability - IHTeam Security Blog
https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/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/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7eWeakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 16× in last 7d / 56× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 93 of 113 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 7 repeat rows among the latest 100 are merged into the row they repeat. The 20 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-02 17:00 UTCEG score recompute
- 2026-11-02 17:00 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-11-01 16:15 UTCEG score recompute
- 2026-11-01 16:15 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-31 16:29 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-10-31 15:23 UTCEG score recompute
- 2026-10-31 15:23 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-30 14:37 UTCEG score recompute
- 2026-10-30 14:37 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-29 13:52 UTCEG score recompute
- 2026-10-29 13:52 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-28 13:05 UTCEG score recompute
- 2026-10-28 13:05 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-27 16:28 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-10-27 12:17 UTCEG score recompute
- 2026-10-27 12:17 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-26 16:28 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-10-25 18:07 UTCEG score recompute
- 2026-10-25 16:29 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-10-25 10:44 UTCEG score recompute
- 2026-10-25 10:44 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-24 09:58 UTCEG score recompute
- 2026-10-24 09:58 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-23 16:28 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-10-23 09:12 UTCEG score recompute
Show 68 moreShow fewer
- 2026-10-23 09:12 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-22 08:26 UTCEG score recompute
- 2026-10-22 08:26 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-21 07:39 UTCEG score recompute
- 2026-10-21 07:39 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-20 16:29 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-10-20 06:54 UTCEG score recompute
- 2026-10-20 06:53 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-19 06:08 UTCEG score recompute
- 2026-10-19 06:07 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-18 16:28 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-10-18 05:20 UTCEG score recompute
- 2026-10-18 05:20 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-17 16:29 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-10-17 04:34 UTCEG score recompute
- 2026-10-17 04:33 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-16 16:34 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-10-16 03:47 UTCEG score recompute
- 2026-10-16 03:47 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-15 00:43 UTCEG score recompute
- 2026-10-15 00:43 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-14 16:29 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-10-13 21:13 UTCEG score recompute
- 2026-10-13 21:12 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-13 16:29 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-10-12 18:29 UTCEG score recompute
- 2026-10-12 18:29 UTCGHSA enrichmentGHSA-hr8v-98c3-7p3x · GitHub severity CRITICAL · GitHub CVSS 9.8
- 2026-10-11 23:18 UTCEG score recompute
- 2026-10-11 13:44 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-10-10 19:56 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-10-07 23:45 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-09-30 15:55 UTCEG score recompute
- 2026-09-24 14:00 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-09-22 14:44 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-09-18 19:24 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-09-11 09:33 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-09-08 21:57 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-09-06 13:45 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-09-05 15:25 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-09-04 05:04 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-09-02 14:09 UTCEPSS rescoreEPSS 92% · 99th percentile
- 2026-08-30 19:14 UTCEPSS rescoreEPSS 88% · 99th percentile
- 2026-08-30 01:19 UTCEPSS rescoreEPSS 88% · 99th percentile
- 2026-08-28 21:38 UTCEPSS rescoreEPSS 88% · 99th percentile
- 2026-08-26 14:43 UTCEPSS rescoreEPSS 88% · 99th percentile
- 2026-08-24 14:13 UTCEPSS rescoreEPSS 88% · 99th percentile
- 2026-08-20 22:52 UTCEPSS rescoreEPSS 88% · 99th percentile
- 2026-08-19 17:01 UTCEPSS rescoreEPSS 88% · 99th percentile
- 2026-08-18 13:45 UTCEPSS rescoreEPSS 88% · 99th percentile
- 2026-08-16 02:11 UTCEPSS rescoreEPSS 88% · 99th percentile
- 2026-08-12 13:48 UTCEPSS rescoreEPSS 88% · 99th percentile
- 2026-08-11 13:38 UTCEPSS rescoreEPSS 88% · 99th percentile
- 2026-08-04 15:07 UTCEPSS rescoreEPSS 87% · 99th percentile
- 2026-08-04 10:35 UTCEPSS rescoreEPSS 87% · 99th percentile
- 2026-07-30 16:25 UTCEPSS rescoreEPSS 87% · 99th percentile
- 2026-07-25 14:15 UTCEPSS rescoreEPSS 87% · 99th percentile
- 2026-07-24 14:15 UTCEPSS rescoreEPSS 87% · 99th percentile
- 2026-07-23 02:11 UTCEG score recompute
- 2026-07-22 22:58 UTCEG score recompute
- 2026-07-22 14:06 UTCEPSS rescoreEPSS 87% · 99th percentile
- 2026-07-18 10:02 UTCEPSS rescoreEPSS 87% · 99th percentile
- 2026-07-13 22:27 UTCEPSS rescoreEPSS 87% · 99th percentile
- 2026-07-13 06:11 UTCEPSS rescoreEPSS 87% · 99th percentile
- 2026-07-12 05:44 UTCEPSS rescoreEPSS 87% · 99th percentile
- 2026-07-08 15:12 UTCEPSS rescoreEPSS 87% · 99th percentile
- 2026-07-06 16:25 UTCEPSS rescoreEPSS 87% · 99th percentile
- 2026-07-04 06:29 UTCEPSS rescoreEPSS 86% · 99th percentile
- 2026-06-27 03:07 UTCEPSS rescoreEPSS 86% · 99th percentile
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. The fix is not yet in a release, so defenders should restrict or isolate affected systems accordingly until it ships.
- Metasploitexploit/unix/http/pfsense_pfblockerng_webshell✓ verifiedPublished Oct 13, 2022
pfSense plugin pfBlockerNG unauthenticated RCE as root
Open source ↗ - GitHub PoCLaburity/CVE-2022-31814Published Jul 23, 2024
Updated Exploit - pfBlockerNG <= 2.1.4_26 Unauth RCE (CVE-2022-31814)
Open source ↗ - GitHub PoCChocapikk/CVE-2022-31814Published Mar 26, 2023
pfBlockerNG <= 2.1.4_26 Unauth RCE (CVE-2022-31814)
Open source ↗ - GitHub PoCdrcayber/RCEPublished Mar 5, 2023
CVE-2022-31814
Open source ↗ - Exploit-DBEDB-51032Published Feb 20, 2023
pfBlockerNG 2.1.4_26 - Remote Code Execution (RCE)
Open source ↗ - Nucleihttp/cves/2022/CVE-2022-31814.yamlPublished Sep 26, 2022
pfSense pfBlockerNG <=2.1..4_26 - OS Command Injection
Open source ↗ - GitHub PoCEvergreenCartoons/SenselessViolencePublished Sep 18, 2022
CVE-2022-31814 Exploitation Toolkit.
Open source ↗
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2022-31814?
When was the CVE record for CVE-2022-31814 published?
Is CVE-2022-31814 actively exploited?
What is the CVSS score of CVE-2022-31814?
How do I remediate CVE-2022-31814?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2022-31814
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