Packet Flood Prevents Mitsubishi MELSEC FX5-ENET/IP Internal Anomaly Detection from Running, Taking the Communication Function Offline

Status: NEW  |  Advisory ID: CVE-2026-8806

Key Details

What to Know

Expected Behavior Violation vulnerability in Mitsubishi Electric MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP all versions allows a remote attacker to cause a denial-of-service (DoS) condition in the affected product by continuously sending a large number of communication packets to the Ethernet port of the product in a short period of time, increasing the processing load of the product, preventing the internal anomaly-detection processing from being performed, and causing the communication function to stop.

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