{"id":"CVE-2018-4838","aliases":["EUVD-2018-16624","GHSA-r849-hjqv-324f"],"status":"published","title":"A vulnerability has been identified in EN100 Ethernet module IEC 61850 variant (All versions \u003c V4...","description":"A vulnerability has been identified in EN100 Ethernet module IEC 61850 variant (All versions \u003c V4.30), EN100 Ethernet module DNP3 variant (All versions \u003c V1.04), EN100 Ethernet module PROFINET IO variant (All versions), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module IEC 104 variant (All versions \u003c V1.22). The web interface (TCP/80) of affected devices allows an unauthenticated user to upgrade or downgrade the firmware of the device, including to older versions with known vulnerabilities.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01404,"percentile":0.72721,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2018-03-08T17:00:00Z","modified":"2026-06-17T01:59:08Z","products":[{"vendor":"siemens","product":"en100 ethernet module dnp3 variant"},{"vendor":"siemens","product":"en100 ethernet module iec 104 variant"},{"vendor":"siemens","product":"en100 ethernet module iec 61850 variant"},{"vendor":"siemens","product":"en100 ethernet module modbus tcp variant"},{"vendor":"siemens","product":"en100 ethernet module profinet io variant"},{"vendor":"siemens","product":"en100_ethernet_module_dnp3_firmware"},{"vendor":"siemens","product":"en100_ethernet_module_iec_104_firmware"},{"vendor":"siemens","product":"en100_ethernet_module_iec_61850_firmware"},{"vendor":"siemens","product":"en100_ethernet_module_modbus_tcp_firmware"},{"vendor":"siemens","product":"en100_ethernet_module_profinet_io_firmware"},{"vendor":"siemens ag","product":"en100 ethernet module dnp3 variant"},{"vendor":"siemens ag","product":"en100 ethernet module iec 104 variant"},{"vendor":"siemens ag","product":"en100 ethernet module iec 61850 variant"},{"vendor":"siemens ag","product":"en100 ethernet module modbus tcp variant"},{"vendor":"siemens ag","product":"en100 ethernet module profinet io variant"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-845879.pdf","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.securityfocus.com/bid/103379","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-4838"},{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-067-01","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://github.com/advisories/GHSA-r849-hjqv-324f"}],"sources":{"cve":[{"id":"CVE-2018-4838","description":"A vulnerability has been identified in EN100 Ethernet module IEC 61850 variant (All versions \u003c V4.30), EN100 Ethernet module DNP3 variant (All versions \u003c V1.04), EN100 Ethernet module PROFINET IO variant (All versions), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module IEC 104 variant (All versions \u003c V1.22). The web interface (TCP/80) of affected devices allows an unauthenticated user to upgrade or downgrade the firmware of the device, including to older versions with known vulnerabilities.","status":"published","published":"2018-03-08T17:00:00Z","modified":"2024-08-05T05:18:26.631Z","updated_at":"2026-11-02T14:35:08.341767Z"}],"euvd":[{"id":"EUVD-2018-16624","description":"A vulnerability has been identified in EN100 Ethernet module IEC 61850 variant (All versions \u003c V4.30), EN100 Ethernet module DNP3 variant (All versions \u003c V1.04), EN100 Ethernet module PROFINET IO variant (All versions), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module IEC 104 variant (All versions \u003c V1.22). The web interface (TCP/80) of affected devices allows an unauthenticated user to upgrade or downgrade the firmware of the device, including to older versions with known vulnerabilities.","status":"published","published":"2018-03-08T17:00:00Z","modified":"2024-08-05T05:18:26Z","updated_at":"2026-11-03T02:40:12.722721Z"}],"ghsa":[{"id":"GHSA-r849-hjqv-324f","title":"A vulnerability has been identified in EN100 Ethernet module IEC 61850 variant (All versions \u003c V4...","description":"A vulnerability has been identified in EN100 Ethernet module IEC 61850 variant (All versions \u003c V4.30), EN100 Ethernet module DNP3 variant (All versions \u003c V1.04), EN100 Ethernet module PROFINET IO variant (All versions), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module IEC 104 variant (All versions \u003c V1.22). The web interface (TCP/80) of affected devices allows an unauthenticated user to upgrade or downgrade the firmware of the device, including to older versions with known vulnerabilities.","status":"published","published":"2022-05-13T01:52:41Z","modified":"2023-02-02T05:02:06Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:51:21.252342Z"}],"nvd":[{"id":"CVE-2018-4838","description":"A vulnerability has been identified in EN100 Ethernet module IEC 61850 variant (All versions \u003c V4.30), EN100 Ethernet module DNP3 variant (All versions \u003c V1.04), EN100 Ethernet module PROFINET IO variant (All versions), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module IEC 104 variant (All versions \u003c V1.22). The web interface (TCP/80) of affected devices allows an unauthenticated user to upgrade or downgrade the firmware of the device, including to older versions with known vulnerabilities.","status":"published","published":"2018-03-08T17:29:00.21Z","modified":"2026-06-17T01:59:08.6Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:04:24.264003Z"}]}}