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CVE-2022-31814 (GCVE-0-2022-31814)

Vulnerability from cvelistv5 – Published: 2022-09-05 00:00 – Updated: 2024-08-03 07:26
VLAI Shadowserver Previdian
Summary
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.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-14 18:16 UTC
CWE
  • n/a
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
Impacted products
Vendor Product Version CPE status
netgate pfblockerng Affected: 2.1.4_26
    cpe:2.3:a:netgate:pfblockerng:2.1.4_26:*:*:*:*:pfsense:*:*
Create a notification for this product.
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 90bd64b2-c683-486c-9781-87cd8d59d38d

Vulnerability ID: CVE-2022-31814

Status: Confirmed

Status Updated: 2026-07-19 00:00 UTC

Exploited: Yes

Characteristics
Severity: 98.0
Timestamps
First Seen: 2025-11-26
Asserted: 2025-11-26
Last Seen: 2026-07-19
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: pfSense / pfSense pfBlockerNG | Class: firewall | Severity: Critical (CVSS 9.8) | IoT: no | In CISA KEV: no | Honeypot connections on 2026-07-19: 1
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class firewall
7D Avg 0
Vendor pfSense
30D Avg 1
90D Avg 2
Product pfSense pfBlockerNG
Cisa Kev no
Connections 1
Observation Date 2026-07-19
Vulnerability Class CVSS
Vulnerability Score 9.8
Vulnerability Severity Critical
References
Created: 2026-06-30 09:22 UTC | Updated: 2026-07-21 01:01 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 74900c57-dad9-4dce-a556-4fb635ca0aa6

Vulnerability ID: CVE-2022-31814

Status: Confirmed

Status Updated: 2025-12-03 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2025-12-03
Asserted: 2025-12-03
Scope
Notes: KEVIntel entry: pfSense pfBlockerNG through 2.1.4_26 allows remote attackers to execute arbitrary OS commands as root via shell metacharacters in the HTTP Host... | Affected: Netgate / pfSense pfBlockerNG | CVSS: 9.8 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title pfSense pfBlockerNG through 2.1.4_26 allows remote attackers to execute arbitrary OS commands as root via shell metacharacters in the HTTP Host...
Vendor Netgate
Product pfSense pfBlockerNG
Added Date 2025-12-03T00:00:00.000Z
Cvss Score 9.8
Epss Score None
Cvss Severity CRITICAL
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-23 14:03 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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            "url": "https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
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            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
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            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T12:21:55+00:00",
      "cve": "CVE-2022-31814",
      "id": "CVE-2022-31814",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2022-31814",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-31814.json",
      "version": "3"
    },
    "vulnrichment": {
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            "providerMetadata": {
              "dateUpdated": "2024-08-03T07:26:01.300Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            },
            "references": [
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                "url": "https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html"
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                "url": "http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.html"
              },
              {
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                "url": "http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html"
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            "title": "CVE Program Container"
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          {
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            "metrics": [
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                  "attackVector": "NETWORK",
                  "availabilityImpact": "HIGH",
                  "baseScore": 9.8,
                  "baseSeverity": "CRITICAL",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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              },
              {
                "other": {
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                    "options": [
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                      },
                      {
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                    ],
                    "role": "CISA Coordinator",
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                    "version": "2.0.3"
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                    "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
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              "versions": [
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          "descriptions": [
            {
              "lang": "en",
              "value": "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."
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          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "description": "n/a",
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                  "type": "text"
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            },
            {
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            },
            {
              "url": "http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.html"
            },
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              "url": "http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html"
            },
            {
              "url": "https://github.com/pfsense/FreeBSD-ports/pull/1169"
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        "assignerShortName": "mitre",
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        "datePublished": "2022-09-05T00:00:00",
        "dateReserved": "2022-05-31T00:00:00",
        "dateUpdated": "2024-08-03T07:26:01.300Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.