CVE-2021-1448

Cisco Firepower Threat Defense Software Command Injection Vulnerability

HIGH

7.8

CVSS Score

Published: April 29, 2021 at 05:30 PM UTC

Updated: August 11, 2026 at 07:33 PM UTC

10 products affected across 1 vendorSecure Firewall Threat DefenseFirepower 4140Firepower 4110

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Severity

HIGH7.8

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

A vulnerability in the CLI of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to execute arbitrary commands with root privileges on the underlying operating system of an affected device that is running in multi-instance mode. This vulnerability is due to insufficient validation of user-supplied command arguments. An attacker could exploit this vulnerability by submitting crafted input to the affected command. A successful exploit could allow the attacker to execute commands on the underlying operating system with root privileges.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Secure Firewall Threat Defense · Cisco

95%

6.4.0 ≤ v < 6.4.0.106.5.0 ≤ v < 6.5.0.56.6.0 ≤ v < 6.6.1

cisco-firepower-4110 (environment) · cisco-firepower-4112 (environment) · cisco-firepower-4115 (environment) · cisco-firepower-4120 (environment) · cisco-firepower-4125 (environment) · cisco-firepower-4140 (environment) · cisco-firepower-4145 (environment) · cisco-firepower-4150 (environment) · cisco-firepower-9300 (environment)

Firepower 4110 · Ciscodevice

80%

All versions

Firepower 4112 · Ciscodevice

80%

All versions

Firepower 4115 · Ciscodevice

80%

All versions

Firepower 4120 · Ciscodevice

80%

All versions