CVE-2026-8806
Denial-of-service (DoS) vulnerability in MELSEC iQ-F Series FX5-ENET/IP Ethernet module
- State
- Published
- Severity
- 8.7 High
- Published
- Jun 19, 2026
- Updated
- Jun 22, 2026
- Reserved
- May 18, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 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 | Mitsubishi |
Weaknesses
- CWE-440 Expected Behavior Violation
Affected Products
| Product | Versions |
|---|---|
Mitsubishi Electric MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IPMitsubishi Electric Corporation |
|
References
- https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-003_en.pdfvendor-advisory
- https://jvn.jp/vu/JVNVU97140216/government-resource
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-169-06government-resource
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