CVE-2022-31814
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 91.9%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
Description
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 91.88% probability · 100th percentile
- Public exploits
- 1 in Exploit-DB · first 20 February 2023
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Affected
- netgate/pfblockerng
- Source
- cve@mitre.org
EPSS 91.9% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html
- https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.htmlRelease Notes, Vendor Advisory
- https://github.com/pfsense/FreeBSD-ports/pull/1169
- https://github.com/pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7e
- https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/Exploit, Technical Description, Third Party Advisory
- http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html
- https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.htmlRelease Notes, Vendor Advisory
- https://github.com/pfsense/FreeBSD-ports/pull/1169
- https://github.com/pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7e
- https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/Exploit, Technical Description, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.