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

CVE-2026-9621

RSLinx Classic® - Multiple Vulnerabilities PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
Rockwell Automation / RSLinx Classic®	affected V4.50 and prior

CWE

CWE-190

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.