Vulnerability details
CVE-2026-8805
Mitsubishi Electric MELSEC iQ-F Series FX5-EIP EtherNet/IP Module FX5-EIP
Denial-of-service (DoS) vulnerability in MELSEC iQ-F Series EtherNet/IP module
CVSS 4.0
8.7High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.7High | 4.0 | CVEProject cvelistV5 (CNA) (Mitsubishi) | 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 |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Mitsubishi Electric Corporation | Mitsubishi Electric MELSEC iQ-F Series FX5-EIP EtherNet/IP Module FX5-EIP | versions 1.000 and prior | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-002_en.pdf vendor-advisory
- https://jvn.jp/vu/JVNVU97140216/ government-resource
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-169-05 government-resource
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Details
- Published
- 2026-06-19
- Last updated
- 2026-06-22
- State
- Published
- Assigner (CNA)
- Mitsubishi
Exploit prediction (EPSS)
0.63%
Probability of exploitation in 30 days
50.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-190Integer Overflow or Wraparound