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CVE PROGRAM SOURCE RECORD9.2 Critical

CVE-2026-9621

RSLinx Classic® - Multiple Vulnerabilities

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Rockwell Automation RSLinx Classic®

Default version status: unaffected

  • V4.50 and prioraffected

References