CVE-2026-12659 — Rockwell Automation Flex 5000® Adapter - Denial of Service

CVE-2026-12659

Rockwell Automation Flex 5000® Adapter - Denial of Service PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
Rockwell Automation / The FLEX 5000® EtherNet/IP Adapter	affected version 6.011

CWE

CWE-415

References

https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1789.html

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.