{"id":"CVE-2021-21866","aliases":["EUVD-2021-9037","GHSA-rf3q-ppf3-vv43"],"status":"published","title":"A unsafe deserialization vulnerability exists in the ObjectManager.plugin ProfileInformation...","description":"A unsafe deserialization vulnerability exists in the ObjectManager.plugin ProfileInformation.ProfileData functionality of CODESYS GmbH CODESYS Development System 3.5.16 and 3.5.17. A specially crafted file can lead to arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability.","severity":{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01792,"percentile":0.78569,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2021-08-02T20:33:56Z","modified":"2026-06-17T03:36:15Z","products":[{"vendor":"3s-smart software solutions","product":"codesys"},{"vendor":"codesys","product":"development_system"}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1301","tags":["x_refsource_MISC","x_transferred","Not Applicable","Third Party Advisory"]},{"url":"https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=16805\u0026token=ee583c498941d9fda86490bca98ff21928eec08a\u0026download=","tags":["x_refsource_CONFIRM","x_transferred","Mitigation","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21866"},{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1303","tags":["Exploit","Third Party Advisory"]},{"url":"https://github.com/advisories/GHSA-rf3q-ppf3-vv43"}],"sources":{"cve":[{"id":"CVE-2021-21866","description":"A unsafe deserialization vulnerability exists in the ObjectManager.plugin ProfileInformation.ProfileData functionality of CODESYS GmbH CODESYS Development System 3.5.16 and 3.5.17. A specially crafted file can lead to arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability.","status":"published","published":"2021-08-02T20:33:56Z","modified":"2024-08-03T18:23:29.737Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:33:00.488332Z"}],"euvd":[{"id":"EUVD-2021-9037","description":"A unsafe deserialization vulnerability exists in the ObjectManager.plugin ProfileInformation.ProfileData functionality of CODESYS GmbH CODESYS Development System 3.5.16 and 3.5.17. A specially crafted file can lead to arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability.","status":"published","published":"2021-08-02T20:33:56Z","modified":"2024-08-03T18:23:29Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T03:25:04.672228Z"}],"ghsa":[{"id":"GHSA-rf3q-ppf3-vv43","title":"A unsafe deserialization vulnerability exists in the ObjectManager.plugin ProfileInformation...","description":"A unsafe deserialization vulnerability exists in the ObjectManager.plugin ProfileInformation.ProfileData functionality of CODESYS GmbH CODESYS Development System 3.5.16 and 3.5.17. A specially crafted file can lead to arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability.","status":"published","published":"2022-05-24T19:09:31Z","modified":"2023-01-30T05:01:10Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:46:21.093669Z"}],"nvd":[{"id":"CVE-2021-21866","description":"A unsafe deserialization vulnerability exists in the ObjectManager.plugin ProfileInformation.ProfileData functionality of CODESYS GmbH CODESYS Development System 3.5.16 and 3.5.17. A specially crafted file can lead to arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability.","status":"published","published":"2021-08-02T21:15:08.013Z","modified":"2026-06-17T03:36:15.727Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"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":"2026-11-02T14:06:56.562207Z"}]}}