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TI-2020-16581 Aliases CVE-2020-27255GHSA-q4jm-4p9g-2h6g

Heap-based buffer overflow in FactoryTalk Linx

Priority LOW 39CWE-122Published · Updated

Key facts

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

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

Summary

A heap overflow vulnerability exists within FactoryTalk Linx Version 6.11 and prior. This vulnerability could allow a remote, unauthenticated attacker to send malicious set attribute requests, which could result in the leaking of sensitive information. This information disclosure could lead to the bypass of address space layout randomization (ASLR).

Why it matters now

EPSS 0.03869 90th 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
—FactoryTalk Linxup to 6.11—No fix listedCNA
  • FactoryTalk Linx Vendor— Affected up to 6.11 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-2020-27255
  2. 2026-10-03 Alias added: GHSA-q4jm-4p9g-2h6g
  3. 2026-10-14 EPSS moved to the 90th–95th percentile

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-2020-04729 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
See all 13 →

Sources

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