CVE-2026-9622highCWE-191

CVE-2026-9622: high-severity vulnerability in Rockwell Automation RSLinx Classic®

RSLinx Classic® - Multiple Vulnerabilities

Published

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21Vexday Risk Score

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

ssvc Trackcvss 8.7epss 0.4%
A denial-of-service security issue exists within RSLinx® Classic. A crafted CIP packet targeting the Forward Close service 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:N
Affected products
Rockwell Automation · RSLinx Classic®
Related CVEs — Rockwell Automation RSLinx Classic®

In the same product, most dangerous first.

CVE-2026-9625HIGHRSLinx Classic® - Multiple VulnerabilitiesEPSS 0.4%CVE-2026-9624HIGHRSLinx Classic® - Multiple VulnerabilitiesEPSS 0.4%CVE-2026-9621CRITICALRSLinx Classic® - Multiple VulnerabilitiesEPSS 0.4%