CVE-2026-9621: RSLinx Classic® - Multiple Vulnerabilities

Published Sep 1, 2026

Updated

A denial-of-service security issue exists within RSLinx® Classic. The security issue stems from improper handling of a malformed packet. A crafted CIP packet can cause the RSLinx® Classic service to crash, requiring a restart of the service to recover

Affected Software

1 affected component

Rockwell Automation RSLinx Classic

Event History

Sep 1, 2026

CVE Published

via MITRE·01:33 PM

Data Sourced

via MITRE·01:33 PM

DescriptionWeakness

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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