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CVE-2026-12659 A denial-of-service security issue exists in the affected products

Description

A denial-of-service security issue exists in the affected products. The security issue stems from improper handling of exceptional conditions when processing crafted CIP packets sent to the adapter. A power cycle is required to recover the module and associated I/O.

Affected products and versions

Product Affected versions Fixed in
The FLEX 5000® EtherNet/IP Adapter Versions not published
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