CVE-2026-1876
Improper Resource Shutdown in Mitsubishi FX5-ENET/IP Causes DoS
Publication date: 2026-03-03
Last updated on: 2026-04-30
Assigner: Mitsubishi Electric Corporation
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mitsubishielectric | melsec_iq-f_fx5-enet/ip_firmware | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-404 | The product does not release or incorrectly releases a resource before it is made available for re-use. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an Improper Resource Shutdown or Release issue found in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP in all versions. It allows a remote attacker to cause a denial-of-service (DoS) condition by continuously sending UDP packets to the affected products.
The attack forces the product into a state where it stops functioning properly and requires a system reset to recover.
How can this vulnerability impact me? :
The impact of this vulnerability is a denial-of-service (DoS) condition on the affected Mitsubishi Electric Ethernet modules. This means that an attacker can remotely disrupt the normal operation of the device, causing it to stop functioning until it is manually reset.
Such disruption can lead to downtime in systems relying on these modules, potentially affecting industrial or automation processes that depend on continuous network communication.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, avoid allowing continuous UDP packets to be sent to the Mitsubishi Electric MELSEC iQ-F Series FX5-ENET/IP Ethernet Module, as this can cause a denial-of-service condition.
If the product becomes unresponsive due to this attack, a system reset of the product is required for recovery.