{"vulnerability": "CVE-2021-4214", "sightings": [{"uuid": "8b7042ca-7a3b-4620-9ac2-d458464da681", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-4214", "type": "seen", "source": "https://bsky.app/profile/ferramentaslinux.bsky.social/post/3m7gisw73ak2i", "content": "", "creation_timestamp": "2025-12-07T21:52:33.345469Z"}, {"uuid": "7fd3282d-7c4e-4de0-9a86-fc51ad775e45", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-42142", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/18099", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2021-42142\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers mishandle the early use of a large epoch number. This vulnerability allows remote attackers to cause a denial of service and false-positive packet drops.\n\ud83d\udccf Published: 2024-01-23T00:00:00.000Z\n\ud83d\udccf Modified: 2025-06-11T17:09:33.477Z\n\ud83d\udd17 References:\n1. https://github.com/contiki-ng/tinydtls/issues/24\n2. https://seclists.org/fulldisclosure/2024/Jan/15", "creation_timestamp": "2025-06-11T17:34:27.000000Z"}, {"uuid": "8f3e804a-33f4-4b14-9c99-c364b9109a97", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-42141", "type": "seen", "source": "https://t.me/ctinow/186397", "content": "https://ift.tt/XreYRi2\nCVE-2021-42141 | Contiki-NG tinyDTLS up to 2018-08-30 Handshake denial of service (Issue 176625)", "creation_timestamp": "2024-02-16T14:21:53.000000Z"}, {"uuid": "f50626d9-8b57-49e1-a1f9-a67e8d7dff77", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": 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"https://t.me/ctinow/182944", "content": "https://ift.tt/a4WZRkK\nCVE-2021-42143 | Contiki-NG TinyDTLS up to 2018-08-30 ClientHello Handshake Message dtls.c dtls_update_parameters infinite loop", "creation_timestamp": "2024-02-12T08:36:55.000000Z"}, {"uuid": "ec43dcfc-f826-473d-9255-443be98550f5", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-42144", "type": "seen", "source": "https://t.me/ctinow/182951", "content": "https://ift.tt/1spd0iS\nCVE-2021-42144 | Contiki-NG TinyDTLS up to 2018-08-30 dtls_ccm_decrypt_message buffer overflow", "creation_timestamp": "2024-02-12T09:02:35.000000Z"}, {"uuid": "76b57eec-b78b-464d-a660-161870581e30", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-42142", "type": "seen", "source": "https://t.me/ctinow/182952", "content": "https://ift.tt/Iw4nrCF\nCVE-2021-42142 | Contiki-NG TinyDTLS up to 2018-08-30 Epoch Number denial of service (Issue 24)", "creation_timestamp": "2024-02-12T09:02:36.000000Z"}, {"uuid": "e3dc56ee-48f3-4221-b909-b15238aafeaf", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-42145", "type": "seen", "source": "https://t.me/ctinow/182950", "content": "https://ift.tt/aljEAn1\nCVE-2021-42145 | Contiki-NG TinyDTLS up to 2018-08-30 check_certificate_request denial of service", "creation_timestamp": "2024-02-12T09:02:34.000000Z"}, {"uuid": "f9539840-6e71-4843-8e19-c7da43cbfdcb", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-42141", "type": "seen", "source": "https://t.me/ctinow/171568", "content": "https://ift.tt/H76LIG0\nCVE-2021-42141", "creation_timestamp": "2024-01-23T00:26:35.000000Z"}, 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