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6.0
Cisco Firewall Software allows attackers to run unauthorized system commands
CVE-2026-20016
Summary
A security flaw in Cisco Firewall Software allows an authorized user to execute unauthorized system commands on the device, potentially giving them control over the underlying operating system. This could happen if an attacker submits specially crafted input for certain commands. To protect your system, ensure that only authorized personnel have access to the device, and regularly update your software to the latest version.
Original title
A vulnerability in the Cisco FXOS Software CLI feature for Cisco Secure Firewall ASA Software and Secure FTD Software could allow an authenticated, local attacker to execute arbitrary commands on t...
Original description
A vulnerability in the Cisco FXOS Software CLI feature for Cisco Secure Firewall ASA Software and Secure FTD Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system with root-level privileges. To exploit this vulnerability, the attacker must have valid administrative credentials on an affected device.
This vulnerability is due to insufficient input validation of user-supplied command arguments. An attacker could exploit this vulnerability by submitting crafted input for specific CLI commands. A successful exploit could allow the attacker to execute commands on the underlying operating system with root-level privileges.
This vulnerability is due to insufficient input validation of user-supplied command arguments. An attacker could exploit this vulnerability by submitting crafted input for specific CLI commands. A successful exploit could allow the attacker to execute commands on the underlying operating system with root-level privileges.
nvd CVSS3.1
6.0
Vulnerability type
CWE-88
Published: 4 Mar 2026 · Updated: 13 Mar 2026 · First seen: 6 Mar 2026