CVE-2026-8805
Denial-of-service (DoS) vulnerability in MELSEC iQ-F Series EtherNet/IP module
- State
- Published
- Severity
- 8.7 High
- Published
- Jun 19, 2026
- Updated
- Jun 22, 2026
- Reserved
- May 18, 2026
Description
Integer Overflow or Wraparound vulnerability in the EtherNet/IP function of Mitsubishi Electric MELSEC iQ-F Series FX5-EIP EtherNet/IP module FX5-EIP versions 1.000 and prior allows a remote attacker to cause a denial-of-service (DoS) condition in the affected product by rapidly establishing a large number of TCP connections to it, resulting in an inconsistency in the product's internal connection management process and triggering improper memory access.
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-190 Integer Overflow or Wraparound
Affected Products
| Product | Versions |
|---|---|
Mitsubishi Electric MELSEC iQ-F Series FX5-EIP EtherNet/IP Module FX5-EIPMitsubishi Electric Corporation |
|
References
- https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-002_en.pdfvendor-advisory
- https://jvn.jp/vu/JVNVU97140216/government-resource
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-169-05government-resource
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