CVE-2022-31814

CVE-2022-31814 is a critical-severity vulnerability in Netgate Pfblockerng with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 88% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

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.

Frequently asked questions

What is 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. NOTE: 3.x is unaffected.
How severe is CVE-2022-31814?
CVE-2022-31814 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-31814 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 88% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-31814?
CVE-2022-31814 affects Netgate Pfblockerng. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-31814?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-31814 published?
CVE-2022-31814 was published on 2022-09-05 and last updated on 2026-06-17.

References

Affected products (1)

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