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CVE-2026-8805

Denial-of-service (DoS) vulnerability in MELSEC iQ-F Series EtherNet/IP module

Published: Jun 19, 2026Updated: Jun 22, 2026 Sources: CVE List NVD csafCWE-190
NVD MITRE
7.5CVSSHIGH
EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

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-190

Affected Products

Mitsubishi Electric MELSEC iQ-F Series FX5-EIP EtherNet/IP Module FX5-EIPMitsubishi Electric CorporationICS / OT / IoT
mitsubishi electric corporationcommercialJPICS / OT / IoTaka mitsubishi electric

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
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References

https://jvn.jp/vu/JVNVU97140216/
jvn.jp
https://www.cisa.gov/news-events/ics-advisories/icsa-26-169-05
cisa.gov
https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-002_en.pdf
mitsubishielectric.com
and 11 more references View all →

Timeline

Published
Jun 19, 2026
Last Updated
Jun 22, 2026

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