What is CVE-2021-1523?

CVE-2021-1523 is a high-severity vulnerability in Cisco Nx-os System Software In Aci Mode, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 8.6/10. Published 2021-08-25.

How severe is CVE-2021-1523?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Cisco Nx-os System Software In Aci Mode

CVE-2021-1523

A vulnerability in Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) Mode could allow an unauthenticated, remote attacker to cause a queue wedge on a leaf switch, which could result in critical control pla…

EPSS: 0.005 (67.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Cisco Nx-os System Software In Aci Mode — versions n/a

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

20210825 Cisco Nexus 9000 Series Fabric Switches ACI Mode Queue Wedge Denial of Service Vulnerability (vendor-advisory, x_refsource_CISCO)

Frequently asked questions

What is CVE-2021-1523?: CVE-2021-1523 is a high-severity vulnerability in Cisco Nx-os System Software In Aci Mode, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 8.6/10. Published 2021-08-25.
How severe is CVE-2021-1523?: High severity. CVSS v3 base score is 8.6 out of 10.