What’s Vulnerable › Vulnerabilities

CVE-2021-27475: Rockwell Automation Connected Components Workbench Deserialization of Untrusted Data

• Severity: high (CVSS 8.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-03-23 · updated 2026-06-17
• Weakness: CWE-502

Description

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.

Affected products

• Rockwell Automation Connected Components Workbench: through 12.00.00

References

• https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1131435
• https://www.cisa.gov/uscert/ics/advisories/icsa-21-133-01
• https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1131435
• https://www.cisa.gov/uscert/ics/advisories/icsa-21-133-01

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