High severity8.8NVD Advisory· Published Sep 26, 2018· Updated Jun 17, 2026
CVE-2018-16055
CVE-2018-16055
Description
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.
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Affected products
2Patches
Vulnerability mechanics
References
2- doddsecurity.com/190/command-injection-on-pfsense-firewalls/nvdThird Party Advisory
- www.pfsense.org/security/advisories/pfSense-SA-18_08.webgui.ascnvdMitigationVendor Advisory
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