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TI-2020-04729 Aliases CVE-2020-5801GHSA-4jvq-wc69-2rqj

Improper handling of exceptional conditions in Rockwell FactoryTalk Linx

Priority MEDIUM 56CWE-755Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

An attacker can craft and send an OpenNamespace message to port 4241 with valid session-id that triggers an unhandled exception in CFTLDManager::HandleRequest function in RnaDaSvr.dll, resulting in process termination. Observed in FactoryTalk Linx 6.11. All versions of FactoryTalk Linx are affected.

Why it matters now

EPSS 0.29659 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-2020-5801
  2. 2026-10-03 Alias added: GHSA-4jvq-wc69-2rqj

References

Advisory 1

  • TI-2020-04730 Resource allocation without limits in Rockwell FactoryTalk Linx CVSS 3.1HIGH 7.5
  • 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-2020-16577 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