CVE-2026-9621

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

References

• https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1794.html