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CVE-2026-1874

Denial-of-Service (DoS) vulnerability in Ethernet function of MELSEC iQ-F Series EtherNet/IP module and Ethernet module

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.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Mitsubishi Electric Mitsubishielectric
Products
Melsec Iq-f Series Fx5-enet/ip Ethernet Module Fx5-enet/ip Melsec Iq-f Series Fx5-enet Ip Melsec Iq-f Fx5-eip and 3 more
CVE-2026-1875

Denial-of-Service (DoS) vulnerability in Ethernet function of MELSEC iQ-F Series EtherNet/IP module

Improper Resource Shutdown or Release vulnerability in 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.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Mitsubishi Electric Corporation Mitsubishielectric
Products
Melsec Iq-f Series Fx5-eip Ethernet/ip Module Fx5-eip Melsec Iq-f Fx5-eip Melsec Iq-f Fx5-eip Firmware