What is CVE-2021-1231?

CVE-2021-1231 is a medium-severity vulnerability in Cisco Nx-os System Software In Aci Mode, classified under Improper Access Control. CVSS score: 4.7/10. Published 2021-02-24.

How severe is CVE-2021-1231?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Vulnerability in Cisco Nx-os System Software In Aci Mode

CVE-2021-1231

A vulnerability in the Link Layer Discovery Protocol (LLDP) for Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an unauthenticated, adjacent attacker to disable switching on a small form-facto…

EPSS: 0.002 (15.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L.

Affected products

Cisco Nx-os System Software In Aci Mode — versions n/a
Cisco Nexus_9000v
Cisco Nexus_92160yc-x
Cisco Nexus_92300yc
Cisco Nexus_92304qc
Cisco Nexus_92348gc-x
Cisco Nexus_9236c
Cisco Nexus_9272q
Cisco Nexus_93108tc-ex
Cisco Nexus_93108tc-ex-24

Weakness classification (CWE)

CWE-284 — Improper Access Control
CWE-346 — Origin Validation Error

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2021-1231?: CVE-2021-1231 is a medium-severity vulnerability in Cisco Nx-os System Software In Aci Mode, classified under Improper Access Control. CVSS score: 4.7/10. Published 2021-02-24.
How severe is CVE-2021-1231?: Medium severity. CVSS v3 base score is 4.7 out of 10.