CVE-2026-8805: Mitsubishi Electric Corporation Mitsubishi Electric Melsec Iq-F Series FX5-Eip Ethernet/ip Module FX5-Eip

High severity, CVSS 8.7. EPSS: 0.6% chance of exploitation in the next 30 days.

Integer Overflow or Wraparound vulnerability in the EtherNet/IP function of Mitsubishi Electric 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 in the affected product by rapidly establishing a large number of TCP connections to it, resulting in an inconsistency in the product's internal connection management process and triggering improper memory access.

Affected products

• Mitsubishi Electric Corporation Mitsubishi Electric Melsec Iq-F Series FX5-Eip Ethernet/ip Module FX5-Eip: up to and including 1.000

Published 2026-06-19. Last modified 2026-06-22.