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TI-2019-04607 Aliases CVE-2019-6553GHSA-2q9x-jr84-x65p

Stack-based buffer overflow in Rockwell RSLinx Classic

Priority HIGH 78CWE-121Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.66341 99th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
RockwellRSLinx Classicup to 4.10.00—No fix listedCNA
  • RSLinx Classic VendorRockwell Affected up to 4.10.00 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:rockwellautomation:rslinx:*:*:*:*:classic:*:*:*up to 4.10.00VulnerableRockwell
  • cpe:2.3:a:rockwellautomation:rslinx:*:*:*:*:classic:*:*:* Versions up to 4.10.00 Vulnerable ·Rockwell

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-6553
  2. 2026-10-03 Alias added: GHSA-2q9x-jr84-x65p

References

Advisory 1

  • TI-2018-10659 Stack-based buffer overflow in Rockwell RSLinx Classic CVSS 3.0CRITICAL 9.8
  • TI-2011-02222 Buffer overflow in RSEds.dll in RSHWare.exe in the EDS Hardware Installation Tool 1.0.5.1… CVSS 2.0HIGH 9.3
  • TI-2020-10651 Memory corruption in Rockwell Automation CVSS 3.1HIGH 7.5
  • TI-2018-10651 Heap-based buffer overflow in Rockwell RSLinx Classic CVSS 3.0HIGH 7.5
  • TI-2018-10657 Uncontrolled resource consumption in Rockwell RSLinx Classic CVSS 3.0HIGH 7.5
  • TI-2020-09693 SQL injection in EDS Subsystem, FactoryTalk Linx software , RSLinx Classic, RSNetWorx… CVSS 3.1HIGH 8.2
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences