Read the docs
TI-2020-04730 Aliases CVE-2020-5802GHSA-43mv-m2vr-rqqc

Resource allocation without limits in Rockwell FactoryTalk Linx

Priority MEDIUM 62CWE-770Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-770.

Summary

An attacker-controlled memory allocation size can be passed to the C++ new operator in RnaDaSvr.dll by sending a specially crafted ConfigureItems message to TCP port 4241. This will cause an unhandled exception, resulting in termination of RSLinxNG.exe. Observed in FactoryTalk 6.11. All versions of FactoryTalk Linx are affected.

Why it matters now

EPSS 0.447 98th 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
—Rockwell FactoryTalk LinxAll versions of FactoryTalk Linx—No fix listedCNA
  • Rockwell FactoryTalk Linx Vendor— Affected All versions of FactoryTalk Linx Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:rockwellautomation:factorytalk_linx:*:*:*:*:*:*:*:*up to 6.11VulnerableRockwell
  • cpe:2.3:a:rockwellautomation:factorytalk_linx:*:*:*:*:*:*:*:* Versions up to 6.11 Vulnerable ·Rockwell

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-5802
  2. 2026-10-03 Alias added: GHSA-43mv-m2vr-rqqc

References

Advisory 1

  • TI-2023-13843 Rockwell Automation FactoryTalk Linx Vulnerable to Denial-of-Service and Information Disclosure CVSS 3.1CRITICAL 9.1
  • TI-2020-09660 Improper input validation in FactoryTalk Linx, RSLinx Classic, Connected Components… CVSS 3.1CRITICAL 9.8
  • TI-2020-04729 Improper handling of exceptional conditions in Rockwell FactoryTalk Linx CVSS 3.1HIGH 7.5
  • TI-2020-16577 Heap-based buffer overflow in FactoryTalk Linx CVSS 3.1CRITICAL 9.8
  • TI-2020-09662 Path traversal in FactoryTalk Linx, RSLinx Classic, Connected Components Workbench… CVSS 3.1HIGH 7.5
  • TI-2020-09658 Improper input validation in FactoryTalk Linx, RSLinx Classic, Connected Components… CVSS 3.1HIGH 8.1
See all 13 →

Sources

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