Is CVE-2026-8806 actively exploited?

No active exploitation of CVE-2026-8806 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-8806 be exploited remotely?

Yes. CVE-2026-8806 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-8806?

CVE-2026-8806 has a CVSS score of 8.7 (HIGH).

HOME VULNERABILITIESCVE-2026-8806

HIGH

CVE-2026-8806

CWE-440Published: June 19, 2026· Updated: Jun 22, 2026

8.7

CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-8806 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

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News & Research Mentioning CVE-2026-8806

Mitsubishi Electric Co.'s MELSEC iQ-F Series FX5-ENET/IP Ethernet Module

CISA Alerts· Jun 18, 2026

View CSAF Summary Successful exploitation of this vulnerability could allow 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 following versions of Mitsubishi Electric Co.'s MELSEC iQ-F Series FX5-ENET/IP Ethernet Module are affected: Mitsubishi Electric MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP vers:all/* (CVE-2026-8806) CVSS Vendor Equipment Vulnerabilities v3 7.5 Mitsubishi Electric Mitsubishi Elect [xlite_meta score:73 src:CISA Alerts xlite_fp:60c82b35060cfc4aae97f6fcedea183887d25325579d4e818379e4d7e2f137cf]