Integer overflow in Mitsubishi Electric Corporation Melsec Iq-F Series Fx5-Eip Ethernet/ip Module
CVE-2026-8805
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.
Vulnerability class: Integer Overflow
Published · last modified .
EPSS exploit prediction
EPSS: 0.006 (48.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Mitsubishi Electric Corporation Melsec Iq-F Series Fx5-Eip Ethernet/ip Module — versions versions 1.000 and prior
Weakness classification (CWE)
References
- www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-002_en.pdf (vendor-advisory)
- jvn.jp/vu/JVNVU97140216/ (government-resource)
- www.cisa.gov/news-events/ics-advisories/icsa-26-169-05 (government-resource)