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TI-2021-08961 Aliases CVE-2021-27475GHSA-q489-3x56-hq57

Rockwell Automation Connected Components Workbench Deserialization of Untrusted Data

Priority MEDIUM 45CWE-502Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

Rockwell Automation Connected Components Workbench v12.00.00 and prior does not limit the objects that can be deserialized. This vulnerability allows attackers to craft a malicious serialized object that, if opened by a local user in Connected Components Workbench, may result in remote code execution. This vulnerability requires user interaction to be successfully exploited.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02989 87th percentileScored 2026-11-08
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
RockwellConnected Components Workbenchup to v12.00.00—No fix listedCNA
  • Connected Components Workbench VendorRockwell Affected up to v12.00.00 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:rockwellautomation:connected_components_workbench:*:*:*:*:*:*:*:*up to 12.00.00VulnerableRockwell
  • cpe:2.3:a:rockwellautomation:connected_components_workbench:*:*:*:*:*:*:*:* Versions up to 12.00.00 Vulnerable ·Rockwell

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27475
  2. 2026-10-03 Alias added: GHSA-q489-3x56-hq57

References

Advisory 2

  • TI-2014-04423 Rockwell Automation Connected Components Workbench (CCW) before 7.00.00 allows remote… CVSS 2.0HIGH 7.5
  • TI-2021-08957 Rockwell Automation Connected Components Workbench Path Traversal CVSS 3.1HIGH 8.6
  • TI-2021-08959 Rockwell Automation Connected Components Workbench Improper Input Validation CVSS 3.1HIGH 8.2
  • TI-2017-03292 Uncontrolled search path in Rockwell Automation Connected Components Workbench CVSS 3.0HIGH 7.0
  • TI-2022-00916 ICSA-22-088-01 Rockwell Automation ISaGRAF CVSS 3.1MEDIUM 5.5

Sources

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