Vulnerability 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
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-9621?
CVE-2026-9621 is a documented vulnerability. 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 c...
How severe is CVE-2026-9621?
CVSS scoring is not yet available for CVE-2026-9621. Check NVD for updates.
Is there a patch for CVE-2026-9621?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.