CVE-2026-8806CWE-440

Denial-of-service (DoS) vulnerability in MELSEC iQ-F Series FX5-ENET/IP Ethernet module

High · published June 19, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
48.3
In the wild
Unconfirmed
What it is

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.

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 · 48.3th percentile
Weakness
CWE-440 · Expected Behavior Violation
Published
2026-06-19T02:31Z
EPSS history
Timeline
  • 19 JUN 02:31Z
    Denial-of-service (DoS) vulnerability in MELSEC iQ-F Series FX5-ENET/IP Ethernet module
    cvelistv5