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VULNERABILITIES

CVE-2021-1387 Details

Description

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 releases resources when it processes certain IPv6 packets that are destined to an affected device. An attacker could exploit this vulnerability by sending multiple crafted IPv6 packets to an affected device. A successful exploit could cause the network stack to run out of available buffers, impairing operations of control plane and management plane protocols and resulting in a DoS condition. Manual intervention would be required to restore normal operations on the affected device. For more information about the impact of this vulnerability, see the Details section of this advisory.

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References to Advisories, Solutions, and Tools

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Weakness Enumeration

CWE-IDCWE NameSource
CWE-401Missing Release of Memory after Effective Lifetime[email protected]

Affected Products

ProductVersions

Change History

7 change records found show changes


QUICK INFO

CVE Dictionary Entry:
CVE-2021-1387
NVD Published Date:
Feb 24, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-1387 Details - Not Deferred