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CVE-2026-8806

Denial-of-service (DoS) vulnerability in MELSEC iQ-F Series FX5-ENET/IP Ethernet module

Published: Jun 19, 2026Updated: Jun 22, 2026 Sources: CVE List NVD csafCWE-440
NVD MITRE
7.5CVSSHIGH
EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

Successful exploitation of this vulnerability could allow a remote attacker to cause a denial-of-service (DoS) condition in the affected product by continuously sending a large number of communication packets to the Ethernet port of the product in a short period of time, increasing the processing load of the product, preventing the internal anomaly-detection processing from being performed, and causing the communication function to stop.

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
Open in CVSS calculator →

Weaknesses

CWE-440

Affected Products

Mitsubishi Electric MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IPMitsubishi Electric CorporationICS / OT / IoT
mitsubishi electric corporationcommercialJPICS / OT / IoTaka mitsubishi electric

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-169-06.json
raw.githubusercontent.com
https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-003_en.pdf
mitsubishielectric.com
https://www.cisa.gov/news-events/ics-advisories/icsa-26-169-06
cisa.gov
and 11 more references View all →

Timeline

Published
Jun 19, 2026
Last Updated
Jun 22, 2026

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