CVE-2019-6553

9.8 criticalEPSS 66%

Critical (9.8) in rockwellautomation rslinx. EPSS 66% 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.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 66% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)
CWEs: CWE-787, CWE-121
Published: 2019-04-04
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

rockwellautomation:rslinx

References

https://ics-cert.us-cert.gov/advisories/ICSA-19-064-01
https://ics-cert.us-cert.gov/advisories/ICSA-19-064-01

Check your stack JSON