What is CVE-2021-1387?

CVE-2021-1387 is a high-severity vulnerability in Cisco Nx-os Software, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 8.6/10. Published 2021-02-24.

How severe is CVE-2021-1387?

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

Vulnerability in Cisco Nx-os Software

CVE-2021-1387

A vulnerability in the network stack of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because the software improperly rele…

EPSS: 0.009 (76.6th 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-401 — Missing Release of Memory after Effective Lifetime

References

20210224 Cisco NX-OS Software IPv6 Netstack Denial of Service Vulnerability (vendor-advisory, x_refsource_CISCO)

Frequently asked questions

What is CVE-2021-1387?: CVE-2021-1387 is a high-severity vulnerability in Cisco Nx-os Software, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 8.6/10. Published 2021-02-24.
How severe is CVE-2021-1387?: High severity. CVSS v3 base score is 8.6 out of 10.