CVE-2019-6553: Rockwellautomation Rslinx

Critical severity, CVSS 9.8. EPSS: 66.1% chance of exploitation in the next 30 days.

A vulnerability was found in Rockwell Automation RSLinx Classic versions 4.10.00 and prior. An input validation issue in a .dll file of RSLinx Classic where the data in a Forward Open service request is passed to a fixed size buffer, allowing an attacker to exploit a stack-based buffer overflow condition.

Affected products

• Rockwellautomation Rslinx: up to and including 4.10.00

Published 2019-04-04. Last modified 2026-06-17.