CVE-2021-1421: Cisco Enterprise Nfv Infrastructure Software

High severity, CVSS 7.8. EPSS: 0.7% chance of exploitation in the next 30 days.

A vulnerability in Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, local attacker to perform a command injection attack on an affected device. The vulnerability is due to insufficient validation of user-supplied input to a configuration command. An attacker could exploit this vulnerability by including malicious input during the execution of this command. A successful exploit could allow a non-privileged attacker authenticated in the restricted CLI to execute arbitrary commands on the underlying operating system (OS) with root privileges.

Affected products

• Cisco Enterprise Nfv Infrastructure Software: before 4.5.1 (fixed in 4.5.1)

Published 2021-05-06. Last modified 2026-06-17.