{"id":"CVE-2026-1874","aliases":["EUVD-2026-9280","GHSA-2595-pf9f-6g58"],"status":"published","title":"Denial-of-Service (DoS) vulnerability in Ethernet function of MELSEC iQ-F Series EtherNet/IP module and Ethernet module","description":"Always-Incorrect Control Flow Implementation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP versions 1.106 and prior and Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-EIP EtherNet/IP Module FX5-EIP versions 1.000 and prior allows a remote attacker to cause a denial-of-service (DoS) condition on the products by continuously sending UDP packets to the products. A system reset of the product is required for recovery.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00483,"percentile":0.42081,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-670"],"published":"2026-03-03T06:46:21Z","modified":"2026-06-17T10:16:38Z","products":[{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5-eip ethernet/ip module fx5-eip"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5-enet/ip ethernet module fx5-enet/ip"},{"vendor":"mitsubishielectric","product":"melsec_iq-f_fx5-eip_firmware"},{"vendor":"mitsubishielectric","product":"melsec_iq-f_fx5-enet\\/ip_firmware"}],"references":[{"url":"https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-021_en.pdf","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://jvn.jp/vu/JVNVU93286687/","tags":["government-resource","Third Party Advisory"]},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-62-01","tags":["government-resource","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1874"},{"url":"https://jvn.jp/vu/JVNVU93286687"},{"url":"https://github.com/advisories/GHSA-2595-pf9f-6g58"}],"sources":{"cve":[{"id":"CVE-2026-1874","title":"Denial-of-Service (DoS) vulnerability in Ethernet function of MELSEC iQ-F Series EtherNet/IP module and Ethernet module","description":"Always-Incorrect Control Flow Implementation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP versions 1.106 and prior and Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-EIP EtherNet/IP Module FX5-EIP versions 1.000 and prior allows a remote attacker to cause a denial-of-service (DoS) condition on the products by continuously sending UDP packets to the products. A system reset of the product is required for recovery.","status":"published","published":"2026-03-03T06:46:21.526Z","modified":"2026-04-24T07:24:38.061Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-670"],"updated_at":"2026-11-02T14:20:01.271368Z"}],"euvd":[{"id":"EUVD-2026-9280","description":"Always-Incorrect Control Flow Implementation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP versions 1.106 and prior and Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-EIP EtherNet/IP Module FX5-EIP versions 1.000 and prior allows a remote attacker to cause a denial-of-service (DoS) condition on the products by continuously sending UDP packets to the products. A system reset of the product is required for recovery.","status":"published","published":"2026-03-03T06:46:21Z","modified":"2026-04-24T07:24:38Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T19:24:18.636842Z"}],"ghsa":[{"id":"GHSA-2595-pf9f-6g58","title":"Always-Incorrect Control Flow Implementation vulnerability in Mitsubishi Electric Corporation...","description":"Always-Incorrect Control Flow Implementation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP versions 1.106 and prior and Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-EIP EtherNet/IP Module FX5-EIP all versions allows a remote attacker to cause a denial-of-service (DoS) condition on the products by continuously sending UDP packets to the products. A system reset of the product is required for recovery.","status":"published","published":"2026-03-03T09:30:48Z","modified":"2026-05-04T15:31:08Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-670"],"updated_at":"2026-11-02T15:07:54.172768Z"}],"nvd":[{"id":"CVE-2026-1874","description":"Always-Incorrect Control Flow Implementation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP versions 1.106 and prior and Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-EIP EtherNet/IP Module FX5-EIP versions 1.000 and prior allows a remote attacker to cause a denial-of-service (DoS) condition on the products by continuously sending UDP packets to the products. A system reset of the product is required for recovery.","status":"published","published":"2026-03-03T07:16:10.067Z","modified":"2026-06-17T10:16:38.67Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-670"],"updated_at":"2026-11-02T14:12:07.420927Z"}]}}