CVE-2018-16055 in the critical feed json
An authenticated command injection vulnerability exists in status_interfaces.php via dhcp_relinquish_lease() in pfSense before 2.4.4 due to…
published 2018-09-26 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-7912
- cvss
- 8.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 11.2%
- EPSS 11.2% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known
Summary
An authenticated command injection vulnerability exists in status_interfaces.php via dhcp_relinquish_lease() in pfSense before 2.4.4 due to its passing user input from the $_POST parameters "ifdescr" and "ipv" to a shell without escaping the contents of the variables. This allows an authenticated WebGUI user with privileges for the affected page to execute commands in the context of the root user when submitting a request to relinquish a DHCP lease for an interface which is configured to obtain its address via DHCP.
Patch / fix
- netgate pfsense 2.4.4
Exploit prediction
11.19% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
-
pfsense.org
/security/advisories/pfSense-SA-18_08.webgui.asc
mitigation, vendor-advisory
-
doddsecurity.com
/190/command-injection-on-pfsense-firewalls/
third-party-advisory
Sources
- CVE List CVE-2018-16055
- NVD CVE-2018-16055
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