CVE-2026-9621criticalCWE-190

CVE-2026-9621: critical vulnerability in Rockwell Automation RSLinx Classic®

RSLinx Classic® - Multiple Vulnerabilities

Published

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28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.2epss 0.4%
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
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
Affected products
Rockwell Automation · RSLinx Classic®
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