CVE-2017-6649: Cisco NX-OS

High severity, CVSS 7.8. EPSS: 0.9% chance of exploitation in the next 30 days.

A vulnerability in the CLI of Cisco NX-OS System Software 7.1 through 7.3 running on Cisco Nexus Series Switches could allow an authenticated, local attacker to perform a command injection attack. The vulnerability is due to insufficient input validation of command arguments. An attacker could exploit this vulnerability by injecting crafted command arguments into a vulnerable CLI command. An exploit could allow the attacker to read or write arbitrary files at the user's privilege level outside of the user's path. Cisco Bug IDs: CSCvb86787, CSCve60516, CSCve60555.

Affected products

• Cisco NX-OS: version 7.1(1)n1(1) only; version 7.1(2)n1(1) only; version 7.1(3)n1(1) only; version 7.1(3)n1(2) only; version 7.1(3)n1(2.1) only; version 7.1(3)n1(3.12) only; …

Published 2017-05-22. Last modified 2026-06-17.