CVE-2018-4021
An exploitable command injection vulnerability exists in the way Netgate pfSense CE 2.4.4-RELEASE processes the parameters of a specific POST request.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 70.3%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 70.31% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Affected
- netgate/pfsense
- Source
- talos-cna@cisco.com
EPSS moved from 70.3% on 25 October 2026 to 70.3% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0690Exploit, Third Party Advisory
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0690Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.