An exploitable command injection vulnerability exists in the way Netgate pfSense CE 2.4.4-RELEASE processes the parameters of a specific PO…

Published 7 y ago 2018-12-03 · modified 4 mo ago 2026-06-17 · JSON

CVSS

7.2

v3.0 · CNA

CISA KEV

not known exploited

EPSS

48.7%

percentile 99%

Public exploits

none known

An exploitable command injection vulnerability exists in the way Netgate pfSense CE 2.4.4-RELEASE processes the parameters of a specific POST request. The attacker can exploit this and gain the ability to execute arbitrary commands on the system. An attacker needs to be able to send authenticated POST requests to the administration web interface. Command injection is possible in the `powerd_ac_mode` POST parameter parameter.

Exploit prediction (EPSS)

48.72% probability of exploitation in the next 30 days, higher than 99% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
CNA	3.0	7.2	`CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`
NVD	3.1	7.2	`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`
CNA	3.0	7.2	`CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`
NVD	2.0	6.5	`AV:N/AC:L/Au:S/C:P/I:P/A:P`

Affected products

Netgate Netgate pfSense

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

talosintelligence.com /vulnerability_reports/TALOS-2018-0690 · x_refsource_MISC, x_transferred

Sources

CVE List: CVE-2018-4020
NVD: CVE-2018-4020

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