VULNERABILITY INTELLIGENCE

CVE-2019-6553

CVSS score9.8 CRITICAL

EPSS probability66.34%

CISA KEVNot currently listed

Published2019-04-04

Last modified2026-06-17

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

Description

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.

Weakness classification

CWE-121: Stack-based Buffer Overflow
CWE-787: Out-of-bounds Write

Primary references

ics-cert@hq.dhs.gov — Third Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, US Government Resource