CVE-2019-12699: Cisco FXOS Software and Firepower Threat Defense Software Command Injection Vulnerabilities

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-10-02 · updated 2026-08-11
Weakness: CWE-20

Description

Multiple vulnerabilities in the CLI of Cisco FXOS Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to execute commands on the underlying operating system (OS) with root privileges. These vulnerabilities are due to insufficient input validation. An attacker could exploit these vulnerabilities by including crafted arguments to specific CLI commands. A successful exploit could allow the attacker to execute commands on the underlying OS with root privileges.

Affected products

Cisco Firepower 9300 Firmware: 2.4(1.214), 2.4(1.216), 2.4(2.54), r241
Cisco Firepower Extensible Operating System (FXOS): from 2.0 before 2.2.2.101; from 2.3 before 2.3.1.155; from 2.4 before 2.4.1.238 — fixed in 2.2.2.101, 2.3.1.155, 2.4.1.238
Cisco Firepower Threat Defense Software: through 6.1.0; from 6.2.0 before 6.2.3.14; from 6.3.0 before 6.3.0.3 — fixed in 6.2.3.14, 6.3.0.3

How to fix

Upgrade to a fixed version: Cisco Firepower Extensible Operating System (FXOS) 2.2.2.101, 2.3.1.155, 2.4.1.238; Cisco Firepower Threat Defense Software 6.2.3.14, 6.3.0.3. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2019-12699 or the next vulnerability affects your stack