What is the CVSS score of CVE-2026-20016?

CVE-2026-20016 has a CVSS 3.1 base score of 6.0 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N. EPSS exploitation probability: 0.0%.

Which versions of Cisco are affected by CVE-2026-20016?

CVE-2026-20016 presents moderate security risk rated CVSS 6.0. Exploitation could compromise the security of affected deployments.

How to fix or mitigate CVE-2026-20016?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Cisco CVE-2026-20016

MEDIUM

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') (CWE-88)

2026-03-04 psirt@cisco.com

Cisco Information Disclosure

6.0

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.0 MEDIUM

AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:05 vuln.today

CVE Published

Mar 04, 2026 - 19:16 nvd

MEDIUM 6.0

DescriptionCVE.org

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.

AnalysisAI

Cisco FXOS Software CLI feature for Cisco Secure Firewall ASA Software and Secure FTD Software contains a vulnerability that allows attackers to execute commands on the underlying operating system with root-level privileges (CVSS 6.0).

Technical ContextAI

affects Cisco FXOS Software CLI feature for Cisco Secure Firewall ASA Software and Secure FTD Software. 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 subm