What is CVE-2021-1588?

CVE-2021-1588 is a high-severity vulnerability in Cisco Nx-os Software, classified under Buffer Over-read. CVSS score: 8.6/10. Published 2021-08-25.

How severe is CVE-2021-1588?

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

Is CVE-2021-1588 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Cisco Nx-os Software

CVE-2021-1588

A vulnerability in the MPLS Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerabi…

EPSS: 0.010 (77.7th 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 Software — versions n/a

Weakness classification (CWE)

CWE-126 — Buffer Over-read

Public proof-of-concept exploits

n0-traces/cve_

References

20210825 Cisco NX-OS Software MPLS OAM Denial of Service Vulnerability (vendor-advisory, x_refsource_CISCO)

Frequently asked questions

What is CVE-2021-1588?: CVE-2021-1588 is a high-severity vulnerability in Cisco Nx-os Software, classified under Buffer Over-read. CVSS score: 8.6/10. Published 2021-08-25.
How severe is CVE-2021-1588?: High severity. CVSS v3 base score is 8.6 out of 10.
Is CVE-2021-1588 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.