{"id":"CVE-2021-27475","aliases":["EUVD-2021-14229","GHSA-q489-3x56-hq57"],"status":"published","title":"Rockwell Automation Connected Components Workbench Deserialization of Untrusted Data","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.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.02989,"percentile":0.87429,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2022-03-23T19:46:38Z","modified":"2026-06-17T03:44:56Z","products":[{"vendor":"rockwell automation","product":"connected components workbench"},{"vendor":"rockwellautomation","product":"connected_components_workbench"}],"references":[{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-133-01","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1131435","tags":["x_refsource_CONFIRM","x_transferred","Permissions Required","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27475"},{"url":"https://github.com/advisories/GHSA-q489-3x56-hq57"}],"sources":{"cve":[{"id":"CVE-2021-27475","title":"Rockwell Automation Connected Components Workbench Deserialization of Untrusted Data","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.","status":"published","published":"2022-03-23T19:46:38Z","modified":"2025-04-16T17:58:45.843Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-14229","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.","status":"published","published":"2022-03-23T19:46:38Z","modified":"2025-04-16T17:58:45Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:22.940917Z"}],"ghsa":[{"id":"GHSA-q489-3x56-hq57","title":"Rockwell Automation Connected Components Workbench v12.00.00 and prior does not limit the objects...","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.","status":"published","published":"2022-03-24T00:00:18Z","modified":"2023-01-27T05:01:03Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:41:48.523978Z"}],"nvd":[{"id":"CVE-2021-27475","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.","status":"published","published":"2022-03-23T20:15:09.27Z","modified":"2026-06-17T03:44:56.36Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:07:05.581807Z"}]}}