Is CVE-2026-1874 actively exploited?

No active exploitation of CVE-2026-1874 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-1874 be exploited remotely?

Yes. CVE-2026-1874 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-1874?

CVE-2026-1874 has a CVSS score of 8.7 (HIGH).

HOME VULNERABILITIESCVE-2026-1874

HIGH

CVE-2026-1874

CWE-670Published: March 3, 2026· Updated: Mar 4, 2026

8.7

CVSS v3.1

EPSS:0.14%probability of exploitation in 30 daysPercentile:33.8th

Official Description

Always-Incorrect Control Flow Implementation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP versions 1.106 and prior and Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-EIP EtherNet/IP Module FX5-EIP all versions allows a remote attacker to cause a denial-of-service (DoS) condition on the products by continuously sending UDP packets to the products. A system reset of the product is required for recovery.

NVD Source

Technical Analysis

CVE-2026-1874 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

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GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

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News & Research Mentioning CVE-2026-1874

Mitsubishi Electric MELSEC iQ-F Series EtherNet/IP module and Ethernet module

CISA Alerts· Mar 3, 2026

View CSAF Summary Successful exploitation of these vulnerabilities could allow a remote attacker to cause a denial-of-service condition by continuously sending UDP packets to the affected products. The following versions of Mitsubishi Electric MELSEC iQ-F Series EtherNet/IP module and Ethernet module are affected: MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP <=1.106, vers:all/* (CVE-2026-1874, CVE-2026-1876) MELSEC iQ-F Series FX5-EIP EtherNet/IP Module FX5-EIP vers:all/* (CVE-2026-1874, CVE-2026-1875) CVSS Vendor Equipment Vulnerabilities v3 7.5 Mitsubishi Electric Mitsubishi Electric MELSEC iQ-F Series EtherNet/IP module and Ethernet module Always-Incorrect Control Flow Implementation, Improper Resource Shutdown or Release Background [xlite_meta score:73 src:CISA Alerts xlite_fp:a4c952fa16755062456a1b46e9d3a57bd31d2594c853f7815e6531d85479db61]