CVE-2026-1874

EUVD-2026-9280
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 34%
Affected Products (NVD)
VendorProductVersion
mitsubishielectricmelsec_iq-f_fx5-eip_firmware
𝑥
≤ 1.000
mitsubishielectricmelsec_iq-f_fx5-enet\/ip_firmware
𝑥
≤ 1.106
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://jvn.jp/vu/JVNVU93286687/
https://www.cisa.gov/news-events/ics-advisories/icsa-26-62-01
https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-021_en.pdf