CRITICAL 9.2 NVD

CVE-2026-9621

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 ca

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.

Published: 2026-09-01 · Source: NVD · Feed updated: 2026-09-01

This critical severity vulnerability with a CVSS score of 9.2 was published on 2026-09-01 via NVD.

Risk Timeline

CVE Disclosed2026-09-01 · -1 days ago

Remediation Resources

Official Advisory

www.rockwellautomation.com/en-us/trust-center/security-advisories/advi

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