CVE-2026-20016

Summary

CVE	CVE-2026-20016
State	PUBLISHED
Assigner	cisco
Source Priority	CVE Program / NVD first with legacy fallback
Published	2026-03-04 19:16:11 UTC
Updated	2026-06-05 12:52:30 UTC
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.

Risk And Classification

Primary CVSS: v3.1 6.7 MEDIUM from [email protected]

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

Problem Types: CWE-88 | CWE-88 Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Version	Source	Type	Score	Severity	Vector
3.1	[email protected]	Primary	6.7	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`
3.1	[email protected]	Secondary	6	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N`
3.1	CNA	CVSSV3_1	6	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N`

CVSS v3.1 Breakdown

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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

NVD Known Affected Configurations (CPE 2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Operating System	Cisco	Adaptive Security Appliance Software	All	All	All	All

Vendor Declared Affected Products

Source	Vendor	Product	Version	Platforms
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.0	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.0.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.1.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.2	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.2.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.3	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.4	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.5	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.6	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.6.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.6.2	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.6.3	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.7	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.8	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.0.8.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.1.0	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.1.0.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.1.0.3	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.0	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.0.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.2	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.3	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.4	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.4.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.5	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.5.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.6	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.7	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.5.2	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.8	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.8.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.9	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.10	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.2.10.2	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.3.0	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.3.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.3.1.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.3.1.2	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.4.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.4.1.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.4.2	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.4.2.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.4.2.2	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.4.2.3	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.4.2.4	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.4.3	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.6.0	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.6.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.6.2	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.6.2.1	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.7.0	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.7.10	Not specified
CNA	Cisco	Cisco Secure Firewall Threat Defense FTD Software	affected 7.7.10.1	Not specified

References

Reference	Source	Link	Tags
sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-cm...	[email protected]	sec.cloudapps.cisco.com	Vendor Advisory
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.

Additional Advisory Data

Exploits

CNA: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.

There are currently no legacy QID mappings associated with this CVE.