CVE-2026-8805CWE-190

Denial-of-service (DoS) vulnerability in MELSEC iQ-F Series EtherNet/IP module

High · published June 19, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
49.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
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
EPSS
0.00637 · 49.9th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2026-06-19T02:26Z
EPSS history
Timeline
  • 19 JUN 02:26Z
    Denial-of-service (DoS) vulnerability in MELSEC iQ-F Series EtherNet/IP module
    cvelistv5