CVE-2021-1590 — Cisco NX-OS Software system login block-for Denial of Service Vulnerability
A vulnerability in the implementation of the system login block-for command for Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a login process to …
Published: 2021-08-25 · CVSS: 5.3 · CVSS 3.1
A vulnerability in the implementation of the system login block-for command for Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a login process to unexpectedly restart, causing a denial of service (DoS) condition. This vulnerability is due to a logic error in the implementation of the system login block-for command when an attack is detected and acted upon. An attacker could exploit this vulnerability by performing a brute-force login attack on an affected device. A successful exploit could allow the attacker to cause a login process to reload, which could result in a delay during authentication to the affected device.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7