CVE-2026-1874
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductMitsubishielectric Melsec Iq-f Fx5-eip Firmware
PublishedMar 3, 2026
First seenMar 3, 2026
Weakness typeCWE-670CWE-670
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mitsubishielectric melsec_iq-f_fx5-eip_firmware | v ≤ 1.000 | — |
| mitsubishielectric melsec_iq-f_fx5-enet\/ip_firmware | v ≤ 1.106 | — |
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