{"vulnerability": "CVE-2021-26788", "sightings": [{"uuid": "a1f98ab1-1794-412b-98db-6b921a18e63b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2021-26788", "type": "published-proof-of-concept", "source": "https://t.me/CyberSecurityTechnologies/3120", "content": "CVE-2021-26788:\nRemote DoS on CycloneTCP\n(a fully-featured open source IPv4/IPv6 stack for embedded systems) (PoC)\nhttps://blog.quarkslab.com/remote-denial-of-service-on-cyclonetcp-cve-2021-26788.html", "creation_timestamp": "2021-04-14T11:01:15.000000Z"}, {"uuid": "d478f972-de51-498a-82aa-e74e83e560be", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2021-26788", "type": "published-proof-of-concept", "source": "https://t.me/cissp/2948", "content": "", "creation_timestamp": "2026-09-11T10:00:05.375668Z"}, {"uuid": "0bcc6e5d-85a3-4f7f-8553-28661b33aaf4", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2021-26788", "type": "seen", "source": "https://t.me/cissp/2948", "content": "", "creation_timestamp": "2026-09-01T17:00:54.997371Z"}]}