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CVE-2026-20064

Severity CVSS v4.0:
Pending analysis
Type:
CWE-476 NULL Pointer Dereference
Publication date:
04/03/2026
Last modified:
28/04/2026

Description

A vulnerability in of Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, local attacker to cause the device to unexpectedly reload, causing a denial of service (DoS) condition.<br /> <br /> This vulnerability is due to improper validation of user-supplied input. An attacker with a low-privileged account could exploit this vulnerability by using crafted commands at the CLI prompt. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
6.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.9:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.10:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.11:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.12:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.13:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools