CVE-2024-8403: Mitsubishi Electric Melsec Iq-F Series FX5-Enet

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

Improper Validation of Specified Type of Input vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-ENET versions 1.100 to 1.200 and FX5-ENET/IP versions 1.100 to 1.104 allows a remote attacker to cause a Denial of Service condition in Ethernet communication of the products by sending specially crafted SLMP packets.

Affected products

• Mitsubishi Electric Melsec Iq-F Series FX5-Enet: from 1.100
• Mitsubishi Electric Melsec Iq-F Series FX5-Enet IP: from 1.100, up to and including 1.104
• Mitsubishi Electric Corporation Melsec Iq-F Series FX5-Enet
• Mitsubishi Electric Corporation Melsec Iq-F Series FX5-Enet/ip

Published 2024-11-19. Last modified 2026-06-17.