CVE-2021-34756

Published: Oct 27, 2021Modified: Aug 11, 2026

7.8

Vector

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

Exploitability: 1.8 / Impact: 5.9

Source: NVD

Description

Multiple vulnerabilities in the CLI of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to execute arbitrary commands with root privileges. For more information about these vulnerabilities, see the Details section of this advisory.

Affected (28)

Products: Cisco: Firepower Management Center Virtual Appliance, Secure Firewall Threat Defense, Sourcefire Defense Center

Cisco

3 products

Firepower Management Center Virtual Appliance

Secure Firewall Threat Defense

Sourcefire Defense Center

Configuration A

28 vulnerable

Vulnerable Software	Affected Versions
Cisco Firepower Management Center Virtual Appliance	Version 6.1.0
Cisco Firepower Management Center Virtual Appliance	Version 6.2.0
Cisco Firepower Management Center Virtual Appliance	Version 6.2.3
Cisco Firepower Management Center Virtual Appliance	Version 6.3.0
Cisco Firepower Management Center Virtual Appliance	Version 6.4.0.11
Cisco Firepower Management Center Virtual Appliance	Version 6.4.0
Cisco Firepower Management Center Virtual Appliance	Version 6.5.0
Cisco Firepower Management Center Virtual Appliance	Version 6.6.0
Cisco Firepower Management Center Virtual Appliance	Version 6.6.1
Cisco Firepower Management Center Virtual Appliance	Version 6.7.0
Cisco Firepower Management Center Virtual Appliance	Version 7.0.0
Cisco Firepower Management Center Virtual Appliance	Version 7.1.0
Cisco Secure Firewall Threat Defense	From 6.4.0 to 6.4.0.13
Cisco Secure Firewall Threat Defense	From 6.6.0 to 6.6.5
Cisco Secure Firewall Threat Defense	From 6.7.0 to 6.7.0.3
Cisco Secure Firewall Threat Defense	From 7.0.0 to 7.0.1
Cisco Sourcefire Defense Center	Version 6.1.0
Cisco Sourcefire Defense Center	Version 6.2.0
Cisco Sourcefire Defense Center	Version 6.2.3
Cisco Sourcefire Defense Center	Version 6.3.0
Cisco Sourcefire Defense Center	Version 6.4.0.11
Cisco Sourcefire Defense Center	Version 6.4.0
Cisco Sourcefire Defense Center	Version 6.5.0
Cisco Sourcefire Defense Center	Version 6.6.0
Cisco Sourcefire Defense Center	Version 6.6.1
Cisco Sourcefire Defense Center	Version 6.7.0
Cisco Sourcefire Defense Center	Version 7.0.0
Cisco Sourcefire Defense Center	Version 7.1.0

Related CWEs

CWE-20

Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

References (2)

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-cmdinject-FmzsLN8

Source: psirt@cisco.com

Vendor Advisory

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-cmdinject-FmzsLN8

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.