Митсубиси Электрик Ко.'s МЕЛСЭК iQ-F Сериеза ФХ5-Энэт/Ип Этернет-модуль.

View CSAF Summary 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. The following versions of Mitsubishi Electric Co.'s MELSEC iQ-F Series FX5-ENET/IP Ethernet Module are affected: Mitsubishi Electric MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP vers:all/* (CVE-2026-8806) CVSS Vendor Equipment Vulnerabilities v3 7.5 Mitsubishi Electric Mitsubishi Electric Co.'s MELSEC iQ-F Series FX5-ENET/IP Ethernet Module Expected Behavior Violation Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: Japan Vulnerabilities Expand All + CVE-2026-8806 Expected Behavior Violation (CWE-440) vulnerability exists in MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP. 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. View CVE Details Affected Products Mitsubishi Electric Co.'s MELSEC iQ-F Series FX5-ENET/IP Ethernet Module Vendor: Mitsubishi Electric Product Version: Mitsubishi Electric MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP: vers:all/* Product Status: known_affected Remediations No fix planned There are no plans to release fixed version for MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP. For customers of MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP, refer to the Mitsubishi Electric security advisory "https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-003_en.pdf", and take the actions described there. https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-003_en.pdf Mitigation For customers, Mitsubishi Electric recommends using a firewall, virtual private network (VPN), etc. to prevent unauthorized access when internet access is required, to minimize the risk of exploiting this vulnerability. Mitigation For customers, Mitsubishi Electric recommends using the affected product within a LAN and blocking access from untrusted networks and hosts through firewalls, to minimize the risk of exploiting this vulnerability. Mitigation For customers, Mitsubishi Electric recommends using the IP filter function of the affected product to block access from untrusted hosts and minimize the risk of exploiting this vulnerability. For details on the IP filter function, refer to "13.1 IP Filter Function" in the MELSEC iQ-F FX5 User's Manual (Communication) which can be downloaded from the link "https://www.mitsubishielectric.com/fa/download/index.html." https://www.mitsubishielectric.com/fa/download/index.html Mitigation For customers, Mitsubishi Electric recommends restricting physical access to the affected product, as well as to PCs and network devices to which it is connected, to minimize the risk of exploiting this vulnerability. Mitigation For customers, Mitsubishi Electric recommends installing anti-virus software on PCs that can access the affected product, to minimize the risk of exploiting this vulnerability. Relevant CWE: CWE-440 Expected Behavior Violation Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 4.0 8.7 HIGH 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 Acknowledgments Mitsubishi Electric discovering this vulnerability Legal Notice and Terms of Use Thi