PT-2026-50829 · Mitsubishi · Mitsubishi Electric Melsec Iq-F Series Fx5-Enet/Ip Ethernet Module Fx5-Enet/Ip

Published 2026-06-19 · Updated 2026-06-19 · CVE-2026-8806

Mitre

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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.

Fix

Weakness Enumeration

CWE-440

Related Identifiers

CVE-2026-8806

Affected Products

Mitsubishi Electric Melsec Iq-F Series Fx5-Enet/Ip Ethernet Module Fx5-Enet/Ip

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-8806 · Security Note
• https://mitsubishielectric.com/psirt/vulnerability/pdf/2026-003_en.pdf · Vendor Advisory
• https://cisa.gov/news-events/ics-advisories/icsa-26-169-06 · Note
• https://jvn.jp/vu/JVNVU97140216 · Note