A vulnerability in the fabric infrastructure VLAN connection establishment of Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) Mode could allow an unauthenticated, adjacent attacker to bypass security validations and connect an unauthorized server to the infrastructure VLAN. This vulnerability is due to insufficient security requirements during the Link Layer Discovery Protocol (LLDP) setup phase of the infrastructure VLAN. An attacker could exploit this vulnerability by sending a crafted LLDP packet on the adjacent subnet to an affected device. A successful exploit could allow the attacker to connect an unauthorized server to the infrastructure VLAN, which is highly privileged. With a connection to the infrastructure VLAN, the attacker can make unauthorized connections to Cisco Application Policy Infrastructure Controller (APIC) services or join other host endpoints.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.4, indicating it requires adjacent network access with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts integrity (unauthorized modifications), for affected systems. Impacting 41 products from cisco, from cisco, from cisco and 38 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2021-02-24T20:15:12.613
2024-11-21T05:43:52.683
Modified
CVSSv3.1: 7.4 (HIGH)
AV:A/AC:L/Au:N/C:N/I:P/A:N
6.5
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | nx-os | 11.0\(1b\) | Yes |
| Operating System | cisco | nx-os | 11.0\(1c\) | Yes |
| Operating System | cisco | nx-os | 11.0\(1d\) | Yes |
| Operating System | cisco | nx-os | 11.0\(1e\) | Yes |
| Operating System | cisco | nx-os | 11.0\(2j\) | Yes |
| Operating System | cisco | nx-os | 11.0\(2m\) | Yes |
| Operating System | cisco | nx-os | 11.0\(3f\) | Yes |
| Operating System | cisco | nx-os | 11.0\(3i\) | Yes |
| Operating System | cisco | nx-os | 11.0\(3k\) | Yes |
| Operating System | cisco | nx-os | 11.0\(3n\) | Yes |
| Operating System | cisco | nx-os | 11.0\(3o\) | Yes |
| Operating System | cisco | nx-os | 11.0\(4g\) | Yes |
| Operating System | cisco | nx-os | 11.0\(4h\) | Yes |
| Operating System | cisco | nx-os | 11.0\(4o\) | Yes |
| Operating System | cisco | nx-os | 11.0\(4q\) | Yes |
| Operating System | cisco | nx-os | 11.1\(1j\) | Yes |
| Operating System | cisco | nx-os | 11.1\(1o\) | Yes |
| Operating System | cisco | nx-os | 11.1\(1r\) | Yes |
| Operating System | cisco | nx-os | 11.1\(1s\) | Yes |
| Operating System | cisco | nx-os | 11.1\(2h\) | Yes |
| Operating System | cisco | nx-os | 11.1\(2i\) | Yes |
| Operating System | cisco | nx-os | 11.1\(3f\) | Yes |
| Operating System | cisco | nx-os | 11.1\(4e\) | Yes |
| Operating System | cisco | nx-os | 11.1\(4f\) | Yes |
| Operating System | cisco | nx-os | 11.1\(4g\) | Yes |
| Operating System | cisco | nx-os | 11.1\(4i\) | Yes |
| Operating System | cisco | nx-os | 11.1\(4l\) | Yes |
| Operating System | cisco | nx-os | 11.1\(4m\) | Yes |
| Operating System | cisco | nx-os | 11.2\(1i\) | Yes |
| Operating System | cisco | nx-os | 11.2\(1k\) | Yes |
| Operating System | cisco | nx-os | 11.2\(1m\) | Yes |
| Operating System | cisco | nx-os | 11.2\(2g\) | Yes |
| Operating System | cisco | nx-os | 11.2\(2h\) | Yes |
| Operating System | cisco | nx-os | 11.2\(2i\) | Yes |
| Operating System | cisco | nx-os | 11.2\(2j\) | Yes |
| Operating System | cisco | nx-os | 11.2\(3c\) | Yes |
| Operating System | cisco | nx-os | 11.2\(3e\) | Yes |
| Operating System | cisco | nx-os | 11.2\(3h\) | Yes |
| Operating System | cisco | nx-os | 11.2\(3m\) | Yes |
| Operating System | cisco | nx-os | 11.3\(1g\) | Yes |
| Operating System | cisco | nx-os | 11.3\(1h\) | Yes |
| Operating System | cisco | nx-os | 11.3\(1i\) | Yes |
| Operating System | cisco | nx-os | 11.3\(1j\) | Yes |
| Operating System | cisco | nx-os | 11.3\(2f\) | Yes |
| Operating System | cisco | nx-os | 11.3\(2h\) | Yes |
| Operating System | cisco | nx-os | 11.3\(2i\) | Yes |
| Operating System | cisco | nx-os | 11.3\(2j\) | Yes |
| Operating System | cisco | nx-os | 11.3\(2k\) | Yes |
| Operating System | cisco | nx-os | 12.0\(1m\) | Yes |
| Operating System | cisco | nx-os | 12.0\(1n\) | Yes |
| Operating System | cisco | nx-os | 12.0\(1o\) | Yes |
| Operating System | cisco | nx-os | 12.0\(1p\) | Yes |
| Operating System | cisco | nx-os | 12.0\(1q\) | Yes |
| Operating System | cisco | nx-os | 12.0\(1r\) | Yes |
| Operating System | cisco | nx-os | 12.0\(2f\) | Yes |
| Operating System | cisco | nx-os | 12.0\(2g\) | Yes |
| Operating System | cisco | nx-os | 12.0\(2h\) | Yes |
| Operating System | cisco | nx-os | 12.0\(2l\) | Yes |
| Operating System | cisco | nx-os | 12.0\(2m\) | Yes |
| Operating System | cisco | nx-os | 12.0\(2n\) | Yes |
| Operating System | cisco | nx-os | 12.0\(2o\) | Yes |
| Operating System | cisco | nx-os | 12.1\(1h\) | Yes |
| Operating System | cisco | nx-os | 12.1\(1i\) | Yes |
| Operating System | cisco | nx-os | 12.1\(2e\) | Yes |
| Operating System | cisco | nx-os | 12.1\(2g\) | Yes |
| Operating System | cisco | nx-os | 12.1\(2k\) | Yes |
| Operating System | cisco | nx-os | 12.1\(3g\) | Yes |
| Operating System | cisco | nx-os | 12.1\(3h\) | Yes |
| Operating System | cisco | nx-os | 12.1\(3j\) | Yes |
| Operating System | cisco | nx-os | 12.1\(4a\) | Yes |
| Operating System | cisco | nx-os | 12.2\(1k\) | Yes |
| Operating System | cisco | nx-os | 12.2\(1n\) | Yes |
| Operating System | cisco | nx-os | 12.2\(1o\) | Yes |
| Operating System | cisco | nx-os | 12.2\(2e\) | Yes |
| Operating System | cisco | nx-os | 12.2\(2f\) | Yes |
| Operating System | cisco | nx-os | 12.2\(2i\) | Yes |
| Operating System | cisco | nx-os | 12.2\(2j\) | Yes |
| Operating System | cisco | nx-os | 12.2\(2k\) | Yes |
| Operating System | cisco | nx-os | 12.2\(2q\) | Yes |
| Operating System | cisco | nx-os | 12.2\(3j\) | Yes |
| Operating System | cisco | nx-os | 12.2\(3p\) | Yes |
| Operating System | cisco | nx-os | 12.2\(3r\) | Yes |
| Operating System | cisco | nx-os | 12.2\(3s\) | Yes |
| Operating System | cisco | nx-os | 12.2\(3t\) | Yes |
| Operating System | cisco | nx-os | 12.2\(4f\) | Yes |
| Operating System | cisco | nx-os | 12.2\(4p\) | Yes |
| Operating System | cisco | nx-os | 12.2\(4q\) | Yes |
| Operating System | cisco | nx-os | 12.2\(4r\) | Yes |
| Operating System | cisco | nx-os | 12.3\(1e\) | Yes |
| Operating System | cisco | nx-os | 12.3\(1f\) | Yes |
| Operating System | cisco | nx-os | 12.3\(1i\) | Yes |
| Operating System | cisco | nx-os | 12.3\(1l\) | Yes |
| Operating System | cisco | nx-os | 12.3\(1o\) | Yes |
| Operating System | cisco | nx-os | 12.3\(1p\) | Yes |
| Operating System | cisco | nx-os | 13.0\(1k\) | Yes |
| Operating System | cisco | nx-os | 13.0\(2h\) | Yes |
| Operating System | cisco | nx-os | 13.0\(2k\) | Yes |
| Operating System | cisco | nx-os | 13.0\(2n\) | Yes |
| Operating System | cisco | nx-os | 13.1\(1i\) | Yes |
| Operating System | cisco | nx-os | 13.1\(2m\) | Yes |
| Operating System | cisco | nx-os | 13.1\(2o\) | Yes |
| Operating System | cisco | nx-os | 13.1\(2p\) | Yes |
| Operating System | cisco | nx-os | 13.1\(2q\) | Yes |
| Operating System | cisco | nx-os | 13.1\(2s\) | Yes |
| Operating System | cisco | nx-os | 13.1\(2t\) | Yes |
| Operating System | cisco | nx-os | 13.1\(2u\) | Yes |
| Operating System | cisco | nx-os | 13.1\(2v\) | Yes |
| Operating System | cisco | nx-os | 13.2\(1l\) | Yes |
| Operating System | cisco | nx-os | 13.2\(1m\) | Yes |
| Operating System | cisco | nx-os | 13.2\(2l\) | Yes |
| Operating System | cisco | nx-os | 13.2\(2o\) | Yes |
| Operating System | cisco | nx-os | 13.2\(3i\) | Yes |
| Operating System | cisco | nx-os | 13.2\(3j\) | Yes |
| Operating System | cisco | nx-os | 13.2\(3n\) | Yes |
| Operating System | cisco | nx-os | 13.2\(3o\) | Yes |
| Operating System | cisco | nx-os | 13.2\(3r\) | Yes |
| Operating System | cisco | nx-os | 13.2\(3s\) | Yes |
| Operating System | cisco | nx-os | 13.2\(4d\) | Yes |
| Operating System | cisco | nx-os | 13.2\(4e\) | Yes |
| Operating System | cisco | nx-os | 13.2\(5d\) | Yes |
| Operating System | cisco | nx-os | 13.2\(5e\) | Yes |
| Operating System | cisco | nx-os | 13.2\(5f\) | Yes |
| Operating System | cisco | nx-os | 13.2\(6i\) | Yes |
| Operating System | cisco | nx-os | 13.2\(7f\) | Yes |
| Operating System | cisco | nx-os | 13.2\(7k\) | Yes |
| Operating System | cisco | nx-os | 13.2\(8d\) | Yes |
| Operating System | cisco | nx-os | 13.2\(9b\) | Yes |
| Operating System | cisco | nx-os | 13.2\(9f\) | Yes |
| Operating System | cisco | nx-os | 13.2\(9h\) | Yes |
| Operating System | cisco | nx-os | 13.2\(41d\) | Yes |
| Operating System | cisco | nx-os | 14.0\(1h\) | Yes |
| Operating System | cisco | nx-os | 14.0\(2c\) | Yes |
| Operating System | cisco | nx-os | 14.0\(3c\) | Yes |
| Operating System | cisco | nx-os | 14.0\(3d\) | Yes |
| Operating System | cisco | nx-os | 14.1\(1i\) | Yes |
| Operating System | cisco | nx-os | 14.1\(1j\) | Yes |
| Operating System | cisco | nx-os | 14.1\(1k\) | Yes |
| Operating System | cisco | nx-os | 14.1\(1l\) | Yes |
| Operating System | cisco | nx-os | 14.1\(2g\) | Yes |
| Operating System | cisco | nx-os | 14.1\(2m\) | Yes |
| Operating System | cisco | nx-os | 14.1\(2o\) | Yes |
| Operating System | cisco | nx-os | 14.1\(2s\) | Yes |
| Operating System | cisco | nx-os | 14.1\(2u\) | Yes |
| Operating System | cisco | nx-os | 14.1\(2w\) | Yes |
| Operating System | cisco | nx-os | 14.1\(2x\) | Yes |
| Operating System | cisco | nx-os | 14.2\(1i\) | Yes |
| Operating System | cisco | nx-os | 14.2\(1j\) | Yes |
| Operating System | cisco | nx-os | 14.2\(1l\) | Yes |
| Operating System | cisco | nx-os | 14.2\(2e\) | Yes |
| Operating System | cisco | nx-os | 14.2\(2f\) | Yes |
| Operating System | cisco | nx-os | 14.2\(3j\) | Yes |
| Operating System | cisco | nx-os | 14.2\(3l\) | Yes |
| Operating System | cisco | nx-os | 14.2\(3n\) | Yes |
| Operating System | cisco | nx-os | 14.2\(3q\) | Yes |
| Operating System | cisco | nx-os | 14.2\(4i\) | Yes |
| Operating System | cisco | nx-os | 14.2\(4k\) | Yes |
| Operating System | cisco | nx-os | 14.2\(4o\) | Yes |
| Operating System | cisco | nx-os | 14.2\(4p\) | Yes |
| Operating System | cisco | nx-os | 14.2\(5k\) | Yes |
| Operating System | cisco | nx-os | 15.0\(1k\) | Yes |
| Operating System | cisco | nx-os | 15.0\(1l\) | Yes |
| Operating System | cisco | nx-os | 15.0\(2h\) | Yes |
| Hardware | cisco | nexus_9000v | - | No |
| Hardware | cisco | nexus_92160yc-x | - | No |
| Hardware | cisco | nexus_92300yc | - | No |
| Hardware | cisco | nexus_92304qc | - | No |
| Hardware | cisco | nexus_92348gc-x | - | No |
| Hardware | cisco | nexus_9236c | - | No |
| Hardware | cisco | nexus_9272q | - | No |
| Hardware | cisco | nexus_93108tc-ex | - | No |
| Hardware | cisco | nexus_93108tc-ex-24 | - | No |
| Hardware | cisco | nexus_93108tc-fx | - | No |
| Hardware | cisco | nexus_93108tc-fx-24 | - | No |
| Hardware | cisco | nexus_93120tx | - | No |
| Hardware | cisco | nexus_93128tx | - | No |
| Hardware | cisco | nexus_9316d-gx | - | No |
| Hardware | cisco | nexus_93180lc-ex | - | No |
| Hardware | cisco | nexus_93180yc-ex | - | No |
| Hardware | cisco | nexus_93180yc-ex-24 | - | No |
| Hardware | cisco | nexus_93180yc-fx | - | No |
| Hardware | cisco | nexus_93180yc-fx-24 | - | No |
| Hardware | cisco | nexus_93180yc-fx3 | - | No |
| Hardware | cisco | nexus_93180yc-fx3s | - | No |
| Hardware | cisco | nexus_93216tc-fx2 | - | No |
| Hardware | cisco | nexus_93240yc-fx2 | - | No |
| Hardware | cisco | nexus_9332c | - | No |
| Hardware | cisco | nexus_9332pq | - | No |
| Hardware | cisco | nexus_93360yc-fx2 | - | No |
| Hardware | cisco | nexus_9336c-fx2 | - | No |
| Hardware | cisco | nexus_9336c-fx2-e | - | No |
| Hardware | cisco | nexus_9336pq_aci_spine | - | No |
| Hardware | cisco | nexus_9348gc-fxp | - | No |
| Hardware | cisco | nexus_93600cd-gx | - | No |
| Hardware | cisco | nexus_9364c | - | No |
| Hardware | cisco | nexus_9364c-gx | - | No |
| Hardware | cisco | nexus_9372px | - | No |
| Hardware | cisco | nexus_9372px-e | - | No |
| Hardware | cisco | nexus_9372tx | - | No |
| Hardware | cisco | nexus_9372tx-e | - | No |
| Hardware | cisco | nexus_9396px | - | No |
| Hardware | cisco | nexus_9396tx | - | No |
| Hardware | cisco | nexus_9508 | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.