RCE in Pfsense Pfblockerng
CVE-2022-40624
pfSense pfBlockerNG through 2.1.4_27 allows remote attackers to execute arbitrary OS commands as root via the HTTP Host header, a different vulnerability than CVE-2022-31814.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.171 (97.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.171 · newest: 0.171 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- docs.netgate.com/pfsense/en/latest/packages/pfblocker.html (Vendor Advisory)
- github.com/dhammon/pfBlockerNg-RCE (Broken Link)
- github.com/dhammon/pfBlockerNg-CVE-2022-40624 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-40624?
- CVE-2022-40624 is a critical-severity vulnerability in Pfsense Pfblockerng, classified under OS Command Injection. CVSS score: 9.8/10. Published 2022-12-20.
- How severe is CVE-2022-40624?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-40624 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.