Denial-of-Service Vulnerability in Mitsubishi Electric MELSEC iQ-F Series Ethernet Module

CVE-2026-8806

What is CVE-2026-8806?

A vulnerability exists in the Mitsubishi Electric MELSEC iQ-F Series FX5-ENET/IP Ethernet Module that allows a remote attacker to exploit the system by flooding its Ethernet port with a high volume of communication packets. This overwhelming traffic can lead to a denial-of-service condition, resulting in the inability of the product to perform internal anomaly detection and subsequently halting communication functions. The implications of this vulnerability can disrupt operational integrity and hinder the performance of affected products.

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