{"vulnerability": "CVE-2021-21865", "sightings": [{"uuid": "a6d4bd5f-c991-4176-92a4-5706e1fb3ae0", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2021-21865", "type": "seen", "source": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-076-01", "content": "", "creation_timestamp": "2026-03-17T12:00:00.000000Z"}, {"uuid": "facd244c-582e-4366-9e51-6ad737ff164e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21865", "type": "seen", "source": "https://t.me/cibsecurity/26708", "content": "\u203c CVE-2021-21865 \u203c\n\nA unsafe deserialization vulnerability exists in the PackageManagement.plugin ExtensionMethods.Clone() functionality of CODESYS GmbH CODESYS Development System 3.5.16. A specially crafted file can lead to arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2021-08-03T00:27:53.000000Z"}]}