{"id":"CVE-2018-16055","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-16055","generatedAt":"2026-10-29T00:58:09.943Z","title":"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…","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.","published":"2018-09-26T22:29:01.000Z","lastModified":"2026-06-17T01:43:37.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":8.8,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-78"],"affected":["netgate/pfsense"],"epss":{"score":0.11191,"percentile":0.95931,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.09569,"percentile":0.95307},{"date":"2026-09-22","score":0.11191,"percentile":0.95755}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 11.2%, higher than 96% of all known CVEs. Patch or mitigate before the next change window."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-09-22T00:00:00.000Z","detail":{"to":0.11191,"from":0.09569,"percentile":0.95755},"summary":"EPSS moved from 9.6% to 11.2% probability of exploitation in the next thirty days."}],"references":[{"url":"https://doddsecurity.com/190/command-injection-on-pfsense-firewalls/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.pfsense.org/security/advisories/pfSense-SA-18_08.webgui.asc","tags":["Mitigation","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://doddsecurity.com/190/command-injection-on-pfsense-firewalls/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.pfsense.org/security/advisories/pfSense-SA-18_08.webgui.asc","tags":["Mitigation","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-16055","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}