DoS via TCP Flood in Mitsubishi MELSEC iQ-F FX5-ENET/IP
CVE-2026-8806 Published on June 19, 2026

Denial-of-service (DoS) vulnerability in MELSEC iQ-F Series FX5-ENET/IP Ethernet module
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.

Vendor Advisory NVD

Weakness Type

Expected Behavior Violation

A feature, API, or function does not perform according to its specification.


Affected Versions

Mitsubishi Electric Corporation Mitsubishi Electric MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP Version All versions is affected by CVE-2026-8806