{"vulnerability": "cve-2021-1591", "sightings": [{"uuid": "afbe0b6c-db4d-4d2c-bd7b-afb35c53126d", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2021-1591", "type": "published-proof-of-concept", "source": "https://t.me/CyberSecurityTechnologies/4232", "content": "#exploit\nCVE-2021-1588:\nA vulnerability in the MPLS Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software\nhttps://github.com/AlAIAL90/CVE-2021-1588\n]-> A vulnerability in the implementation of the system login block-for command for Cisco NX-OS Software\nhttps://github.com/AlAIAL90/CVE-2021-1590\n]-> A vulnerability in the EtherChannel port subscription logic of Cisco Nexus 9500 Series Switches\u00a0\nhttps://github.com/AlAIAL90/CVE-2021-1591", "creation_timestamp": "2021-09-05T20:30:34.000000Z"}, {"uuid": "35f3d5fc-97f1-4bd7-b81b-1e092aea99ec", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2021-1591", "type": "published-proof-of-concept", "source": "https://t.me/cissp/4289", "content": "", "creation_timestamp": "2026-09-10T20:00:10.636119Z"}, {"uuid": "75a92724-4902-4015-bab5-481c9210bd0f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2021-1591", "type": "seen", "source": "https://t.me/cissp/4289", "content": "", "creation_timestamp": "2026-09-01T17:00:41.074487Z"}]}