{"id":"CVE-2017-16743","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-16743","generatedAt":"2026-10-29T01:53:14.272Z","title":"An Improper Authorization issue was discovered in PHOENIX CONTACT FL SWITCH 3xxx, 4xxx, and 48xxx Series products running firmware Version 1.0 to 1.32.","description":"An Improper Authorization issue was discovered in PHOENIX CONTACT FL SWITCH 3xxx, 4xxx, and 48xxx Series products running firmware Version 1.0 to 1.32. A remote unauthenticated attacker may be able to craft special HTTP requests allowing an attacker to bypass web-service authentication allowing the attacker to obtain administrative privileges on the device.","published":"2018-01-12T20:29:00.000Z","lastModified":"2026-06-17T01:09:45.000Z","status":"Modified","sourceIdentifier":"ics-cert@hq.dhs.gov","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-285","CWE-863"],"affected":["phoenixcontact/fl switch 3005 firmware","phoenixcontact/fl switch 3005t firmware","phoenixcontact/fl switch 3004t-fx firmware","phoenixcontact/fl switch 3004t-fx st firmware","phoenixcontact/fl switch 3008 firmware","phoenixcontact/fl switch 3008t firmware","phoenixcontact/fl switch 3006t-2fx firmware","phoenixcontact/fl switch 3006t-2fx st firmware","phoenixcontact/fl switch 3012e-2sfx firmware","phoenixcontact/fl switch 3016e firmware","phoenixcontact/fl switch 3016 firmware","phoenixcontact/fl switch 3016t firmware","phoenixcontact/fl switch 3006t-2fx sm firmware","phoenixcontact/fl switch 4008t-2sfp firmware","phoenixcontact/fl switch 4008t-2gt-4fx sm firmware","phoenixcontact/fl switch 4008t-2gt-3fx sm firmware","phoenixcontact/fl switch 4808e-16fx lc-4gc firmware","phoenixcontact/fl switch 4808e-16fx sm-4gc firmware","phoenixcontact/fl switch 4808e-16fx sm st-4gc firmware","phoenixcontact/fl switch 4808e-16fx st-4gc firmware","phoenixcontact/fl switch 4808e-16fx-4gc firmware","phoenixcontact/fl switch 4808e-16fx sm lc-4gc firmware","phoenixcontact/fl switch 4012t 2gt 2fx firmware","phoenixcontact/fl switch 4012t-2gt-2fx st firmware","phoenixcontact/fl switch 4824e-4gc firmware","phoenixcontact/fl switch 4800e-24fx-4gc firmware","phoenixcontact/fl switch 4800e-24fx sm-4gc firmware","phoenixcontact/fl switch 3012e-2fx sm firmware","phoenixcontact/fl switch 4000t-8poe-2sfp-r firmware"],"epss":{"score":0.03111,"percentile":0.87728,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (3.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://cert.vde.com/en-us/advisories/vde-2017-006","source":"ics-cert@hq.dhs.gov"},{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-011-03","tags":["Patch","Third Party Advisory","US Government Resource"],"source":"ics-cert@hq.dhs.gov"},{"url":"https://cert.vde.com/en-us/advisories/vde-2017-006","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-011-03","tags":["Patch","Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-16743","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."}