CVE-2020-3167: A vulnerability in the CLI of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker to execute arbitrary com...

Description

A vulnerability in the CLI of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system (OS). The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by including crafted arguments to specific commands. A successful exploit could allow the attacker to execute arbitrary commands on the underlying OS with the privileges of the currently logged-in user for all affected platforms excluding Cisco UCS 6400 Series Fabric Interconnects. On Cisco UCS 6400 Series Fabric Interconnects, the injected commands are executed with root privileges.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.48%

38.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Firepower Threat Defense	>= 6.2.2, < 6.2.3.13
Cisco	Firepower Threat Defense	>= 6.3.0, < 6.4.0.8
Cisco	Firepower Threat Defense	>= 6.5.0, < 6.5.0.2
Cisco	Adaptive Security Appliance Software	>= 9.8, < 9.9.2.66
Cisco	Adaptive Security Appliance Software	>= 9.10, < 9.12.3.6
Cisco	Adaptive Security Appliance Software	>= 9.13, < 9.13.1.5
Cisco	Firepower Extensible Operating System	< 2.4.1.234
Cisco	Ucs Manager	< 3.2\(3n\)
Cisco	Ucs Manager	>= 4.0, < 4.0\(4g\)

References

Timeline

Published: Feb 26, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3167?

A vulnerability in the CLI of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system (OS). The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by including crafted arguments to specific commands. A successful exploit could allow the attacker to execute arbitrary commands on the underlying OS with the privileges of the currently logged-in user for all affected platforms excluding Cisco UCS 6400 Series Fabric Interconnects. On Cisco UCS 6400 Series Fabric Interconnects, the injected commands are executed with root privileges.

How severe is CVE-2020-3167?

CVE-2020-3167 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3167?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.