CVE-2022-31814 (GCVE-0-2022-31814)
Vulnerability from cvelistv5 – Published: 2022-09-05 00:00 – Updated: 2024-08-03 07:26Summary
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)
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
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| netgate | pfblockerng |
Affected:
2.1.4_26
cpe:2.3:a:netgate:pfblockerng:2.1.4_26:*:*:*:*:pfsense:*:* |
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: ada2eba8-89ea-43ab-8108-86077b695cc4
Exploited: Yes
Timestamps
First Seen: 2025-12-03
Asserted: 2025-12-03
Scope
Notes: 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) | EPSS: 0.91881 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.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... |
| Cve Id | CVE-2022-31814 |
| Vendor | Netgate |
| Ghsa Id | GHSA-HR8V-98C3-7P3X |
| Product | pfSense pfBlockerNG |
| Added Date | 2025-12-03T00:00:00.000Z |
| Cvss Score | 9.8 |
| Epss Score | 0.91881 |
| Previous Ids | |
| Cvss Severity | CRITICAL |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.99816 |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2022-31814 |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | True |
References
Created: 2026-10-02 09:09 CEST
| Updated: 2026-10-02 09:09 CEST
{
"containers": {
"adp": [
{
"affected": [
{
"cpes": [
"cpe:2.3:a:netgate:pfblockerng:2.1.4_26:*:*:*:*:pfsense:*:*"
],
"defaultStatus": "unknown",
"product": "pfblockerng",
"vendor": "netgate",
"versions": [
{
"status": "affected",
"version": "2.1.4_26"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"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",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2022-31814",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-05-14T18:16:49.666639Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-78",
"description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-06-04T17:15:41.996Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2024-08-03T07:26:01.300Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/"
},
{
"tags": [
"x_transferred"
],
"url": "http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.html"
},
{
"tags": [
"x_transferred"
],
"url": "http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://github.com/pfsense/FreeBSD-ports/pull/1169"
},
{
"tags": [
"x_transferred"
],
"url": "https://github.com/pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7e"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"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."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-05-13T19:44:48.811Z",
"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"shortName": "mitre"
},
"references": [
{
"url": "https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html"
},
{
"url": "https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/"
},
{
"url": "http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.html"
},
{
"url": "http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html"
},
{
"url": "https://github.com/pfsense/FreeBSD-ports/pull/1169"
},
{
"url": "https://github.com/pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7e"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2022-31814",
"datePublished": "2022-09-05T00:00:00.000Z",
"dateReserved": "2022-05-31T00:00:00.000Z",
"dateUpdated": "2024-08-03T07:26:01.300Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2022-31814",
"date": "2026-10-04",
"epss": "0.91881",
"percentile": "0.99816"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cve@mitre.org"
},
{
"affectedData": [
{
"cpes": [
"cpe:2.3:a:netgate:pfblockerng:2.1.4_26:*:*:*:*:pfsense:*:*"
],
"defaultStatus": "unknown",
"product": "pfblockerng",
"vendor": "netgate",
"versions": [
{
"status": "affected",
"version": "2.1.4_26"
}
]
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:netgate:pfblockerng:*:*:*:*:*:pfsense:*:*",
"matchCriteriaId": "DD1D3CC8-5BC5-4E09-9345-4CDD99DD6E6B",
"versionEndIncluding": "2.1.4_26",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"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."
},
{
"lang": "es",
"value": "pfSense pfBlockerNG versiones hasta 2.1.4_26, permite a atacantes remotos ejecutar comandos arbitrarios del Sistema Operativo como root por medio de metacaracteres de shell en el encabezado HTTP Host. NOTA: la versi\u00f3n 3.x no est\u00e1 afectada"
}
],
"id": "CVE-2022-31814",
"lastModified": "2026-06-17T04:46:21.937",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"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",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"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",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2022-31814",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-05-14T18:16:49.666639Z",
"version": "2.0.3"
}
}
]
},
"published": "2022-09-05T16:15:08.500",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Third Party Advisory",
"VDB Entry"
],
"url": "http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.html"
},
{
"source": "cve@mitre.org",
"url": "http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html"
},
{
"source": "cve@mitre.org",
"url": "https://github.com/pfsense/FreeBSD-ports/pull/1169"
},
{
"source": "cve@mitre.org",
"url": "https://github.com/pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7e"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Technical Description",
"Third Party Advisory"
],
"url": "https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Third Party Advisory",
"VDB Entry"
],
"url": "http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/pfsense/FreeBSD-ports/pull/1169"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7e"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Technical Description",
"Third Party Advisory"
],
"url": "https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-78"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-78"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T07:26:01.300Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/"
},
{
"tags": [
"x_transferred"
],
"url": "http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.html"
},
{
"tags": [
"x_transferred"
],
"url": "http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://github.com/pfsense/FreeBSD-ports/pull/1169"
},
{
"tags": [
"x_transferred"
],
"url": "https://github.com/pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7e"
}
],
"title": "CVE Program Container"
},
{
"affected": [
{
"cpes": [
"cpe:2.3:a:netgate:pfblockerng:2.1.4_26:*:*:*:*:pfsense:*:*"
],
"defaultStatus": "unknown",
"product": "pfblockerng",
"vendor": "netgate",
"versions": [
{
"status": "affected",
"version": "2.1.4_26"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"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",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2022-31814",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-05-14T18:16:49.666639Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-78",
"description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-05-14T18:26:47.647Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"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."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-05-13T19:44:48.811080",
"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"shortName": "mitre"
},
"references": [
{
"url": "https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html"
},
{
"url": "https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/"
},
{
"url": "http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.html"
},
{
"url": "http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html"
},
{
"url": "https://github.com/pfsense/FreeBSD-ports/pull/1169"
},
{
"url": "https://github.com/pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7e"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2022-31814",
"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"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
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.
Loading…