SecuriTricks - CVE-2026-8806

Description

Expected Behavior Violation vulnerability in Mitsubishi Electric MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP all versions allows 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.

Product(s) Impacted

Vendor	Product	Versions
Mitsubishi Electric	Melsec Iq-f Fx5-enet/ip	*

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-440

Expected Behavior Violation

A feature, API, or function does not perform according to its specification.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	mitsubishi_electric	melsec_iq-f_fx5-enet/ip	/	/	/	/	/	/	/	/

References

https://jvn.jp/vu/JVNVU97140216/

https://www.cisa.gov/news-events/ics-advisories/icsa-26-169-06

https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-003_en.pdf

CVSS Score

8.7 / 10

CVSS Data - 4.0

Attack Vector: NETWORK
Attack Complexity: LOW
Attack Requirements: NONE
Privileges Required: NONE
User Interaction: NONE
Scope:
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: HIGH
Exploit Maturity: NOT_DEFINED

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

View Vector String

Timeline

Published: June 19, 2026, 3:16 a.m.
Last Modified: June 19, 2026, 3:16 a.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2026-8806