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CVE-2018-4021 Details

Description

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_battery_mode` POST parameter.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.2 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:7.2 HIGHVector:CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0690	CVE	ExploitThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0690	[email protected]	ExploitThird Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-78	Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')	[email protected]

Affected Products

Product	Versions
netgate pfsense	2.4.4
CPE cpe:2.3:a:netgate:pfsense:2.4.4:::::::* Remediation No remediation found in references.

Change History

7 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jun 7, 2022	Modified Analysis	[email protected]
Apr 19, 2022	CVE Modified	[email protected]
Oct 3, 2019	CWE Remap	[email protected]
Dec 31, 2018	Initial Analysis	[email protected]