{"metadata": {"vulnerability": "GHSA-W44J-66G7-XW99", "count": 1, "kinds": {"milestone": 0, "sighting": 1, "kev": 0, "other": 0}}, "data": [{"timestamp": "2021-10-13T02:25:55Z", "date_only": false, "value": "2021-10-13T02:25:55.000000Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/cibsecurity/30472", "record": "GHSA-W44J-66G7-XW99", "field": "creation_timestamp", "uuid": "0501aabf-64f3-4e48-9354-d77433ca71ba", "content": "\u203c CVE-2021-3321 \u203c\n\nInteger Underflow in Zephyr in IEEE 802154 Fragment Reassembly Header Removal. Zephyr versions >= >=2.4.0 contain Integer Overflow to Buffer Overflow (CWE-680). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w44j-66g7-xw99\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/30472", "metric_role": "exploit_publication", "metric_basis": "sighting_report"}], "metrics": {"as_of": "2026-11-12T10:06:04.389Z", "anchors": {"origin": null, "discovery": null, "report": null, "acknowledgement": null, "disclosure": null, "exploit_publication": {"timestamp": "2021-10-13T02:25:55Z", "date_only": false, "value": "2021-10-13T02:25:55.000000Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/cibsecurity/30472", "record": "GHSA-W44J-66G7-XW99", "field": "creation_timestamp", "uuid": "0501aabf-64f3-4e48-9354-d77433ca71ba", "content": "\u203c CVE-2021-3321 \u203c\n\nInteger Underflow in Zephyr in IEEE 802154 Fragment Reassembly Header Removal. Zephyr versions >= >=2.4.0 contain Integer Overflow to Buffer Overflow (CWE-680). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w44j-66g7-xw99\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/30472", "metric_role": "exploit_publication", "metric_basis": "sighting_report"}, "exploitation": null, "patch": null}, "vendor_response_time": {"available": false, "missing": ["start", "end"]}, "time_to_exploit": {"available": false, "missing": ["start", "end"]}, "disclosure_to_exploit": {"available": false, "missing": ["start", "end"]}, "disclosure_to_exploit_publication": {"available": false, "missing": ["start"]}, "time_to_patch": {"available": false, "missing": ["start", "end"]}, "total_time_to_patch": {"available": false, "missing": ["start", "end"]}, "disclosure_to_patch": {"available": false, "missing": ["start", "end"]}, "time_unpatched": {"available": false, "missing": ["start"]}, "exploitation_to_patch": {"available": false, "missing": ["start"]}, "exploit_publication_to_patch": {"available": true, "seconds": 160386009.389517, "hours": 44551.66927486584, "days": 1856.3195531194099, "min_seconds": 160386009.389517, "max_seconds": 160386009.389517, "approximate": false, "ongoing": true, "order_known": true, "batch_listing": false, "end_before_start": false, "start": {"timestamp": "2021-10-13T02:25:55Z", "date_only": false, "value": "2021-10-13T02:25:55.000000Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/cibsecurity/30472", "record": "GHSA-W44J-66G7-XW99", "field": "creation_timestamp", "uuid": "0501aabf-64f3-4e48-9354-d77433ca71ba", "content": "\u203c CVE-2021-3321 \u203c\n\nInteger Underflow in Zephyr in IEEE 802154 Fragment Reassembly Header Removal. Zephyr versions >= >=2.4.0 contain Integer Overflow to Buffer Overflow (CWE-680). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w44j-66g7-xw99\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/30472", "metric_role": "exploit_publication", "metric_basis": "sighting_report"}, "end": {"timestamp": "2026-11-12T10:06:04.389Z", "date_only": false, "label": "As of", "source": "Calculation clock"}}}}