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CVE-2026-1874

Denial-of-Service (DoS) vulnerability in Ethernet function of MELSEC iQ-F Series EtherNet/IP module and Ethernet module

Published: Mar 3, 2026Updated: May 4, 2026 Sources: CVE List NVD csafCWE-670
7.5HIGH
NVD MITRE
EPSS Score
0.4%
Top 66.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-670

Affected Products

melsec iq-f fx5-eip firmwaremitsubishielectricICS / OT / IoT
melsec iq-f fx5-enet\/ip firmwaremitsubishielectricICS / OT / IoT
MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IPMitsubishi Electric CorporationICS / OT / IoT
MELSEC iQ-F Series FX5-EIP EtherNet/IP Module FX5-EIPMitsubishi Electric CorporationICS / OT / IoT
mitsubishielectriccommercialJPICS / OT / IoTaka mitsubishi electric
mitsubishi electric corporationcommercialJPICS / OT / IoTaka mitsubishi electric

Exploitability

Official Patch Available
No detection template yetWe can run the check for you — a free external exposure review, no install. Check my exposure

References

https://jvn.jp/vu/JVNVU93286687/
jvn.jp
https://www.cisa.gov/news-events/ics-advisories/icsa-26-62-01
cisa.gov
https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-021_en.pdf
mitsubishielectric.com
and 15 more references View all →

Timeline

Published
Mar 3, 2026
Last Updated
May 4, 2026

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