Description
Always-Incorrect Control Flow Implementation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP versions 1.106 and prior and Mitsubishi Electric Corporation 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 on the products by continuously sending UDP packets to the products. A system reset of the product is required for recovery.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mitsubishi Electric | MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP | versions 1.106 and prior | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5-EIP EtherNet/IP Module FX5-EIP | versions 1.000 and prior | — |
Advisories 1
- ICSA-26-062-01 Mitsubishi Electric MELSEC iQ-F Series EtherNet/IP module and Ethernet Module (Update A) CISA ICS & IT advisories · May 7, 2026
References
- https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-021_en.pdf vendor-advisory
- https://jvn.jp/vu/JVNVU93286687/ government-resource
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-62-01 government-resource