How serious is CVE-2026-1876?

This vulnerability has a CVSS score of 8.7 out of 10, classified as HIGH severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2026-1876?

Yes, proof-of-concept exploit code for CVE-2026-1876 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2026-1876?

Check the official CVE details for a complete list of affected products and versions.

How do I fix CVE-2026-1876?

To remediate CVE-2026-1876, check for security patches from the vendor. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2026-1876

High

|8.7

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

This vulnerability allows an attacker to crash the Mitsubishi Electric MELSEC iQ-F Series FX5-ENET/IP Ethernet Module by flooding it with UDP packets, causing it to become unresponsive. To recover the device, a system reset is necessary, making it a significant risk for systems relying on this equipment.

Technical Description

Improper Resource Shutdown or Release vulnerability in Mitsubishi Electric Corporation 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 on the products by continuously sending UDP packets to the products. A system reset of the product is required for recovery.

CVSS Vector Analysis

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Confidentiality ImpactHigh

Integrity ImpactHigh

Availability ImpactHigh

ScopeChanged

Vector String

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 Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$4,579($1K-$5K)

Vendor Response

Grade APatched in 1 day

Quick Information

Published

Mar 3, 2026

about 1 month ago

Last Modified

Mar 4, 2026

about 1 month ago