{"id":"CVE-2017-16743","aliases":["EUVD-2017-7927","GHSA-xp4q-qhv3-758q"],"status":"published","title":"An Improper Authorization issue was discovered in PHOENIX CONTACT FL SWITCH 3xxx, 4xxx, and 48xxx...","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.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03111,"percentile":0.87884,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-285","CWE-863"],"published":"2018-01-12T20:00:00Z","modified":"2026-06-17T01:09:44Z","products":[{"vendor":"phoenixcontact","product":"fl_switch_3004t-fx_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_3004t-fx_st_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_3005_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_3005t_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_3006t-2fx_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_3006t-2fx_sm_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_3006t-2fx_st_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_3008_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_3008t_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_3012e-2fx_sm_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_3012e-2sfx_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_3016_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_3016e_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_3016t_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4000t-8poe-2sfp-r_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4008t-2gt-3fx_sm_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4008t-2gt-4fx_sm_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4008t-2sfp_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4012t-2gt-2fx_st_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4012t_2gt_2fx_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4800e-24fx-4gc_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4800e-24fx_sm-4gc_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4808e-16fx-4gc_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4808e-16fx_lc-4gc_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4808e-16fx_sm-4gc_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4808e-16fx_sm_lc-4gc_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4808e-16fx_sm_st-4gc_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4808e-16fx_st-4gc_firmware"},{"vendor":"phoenixcontact","product":"fl_switch_4824e-4gc_firmware"}],"references":[{"url":"https://cert.vde.com/en-us/advisories/vde-2017-006","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-011-03","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-16743"},{"url":"https://github.com/advisories/GHSA-xp4q-qhv3-758q"}],"sources":{"cve":[{"id":"CVE-2017-16743","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.","status":"published","published":"2018-01-12T20:00:00Z","modified":"2024-08-05T20:35:20.399Z","cwes":["CWE-285"],"updated_at":"2026-11-02T14:33:21.142987Z"}],"euvd":[{"id":"EUVD-2017-7927","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.","status":"published","published":"2018-01-12T20:00:00Z","modified":"2024-08-05T20:35:20Z","updated_at":"2026-11-03T02:23:11.533108Z"}],"ghsa":[{"id":"GHSA-xp4q-qhv3-758q","title":"An Improper Authorization issue was discovered in PHOENIX CONTACT FL SWITCH 3xxx, 4xxx, and 48xxx...","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.","status":"published","published":"2022-05-13T01:44:11Z","modified":"2023-02-02T05:01:03Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:51:05.943235Z"}],"nvd":[{"id":"CVE-2017-16743","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.","status":"published","published":"2018-01-12T20:29:00.387Z","modified":"2026-06-17T01:09:44.613Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-285","CWE-863"],"updated_at":"2026-11-02T14:04:13.257031Z"}]}}