CVE-2020-3457

Name: CVE-2020-3457
Creator: NVD / NIST
Published: 2020-10-21T19:15:16.357+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.7/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2020-3457 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. A vulnerability in the CLI of Cisco FXOS Software could allow an authenticated, local attacker to inject arbitrary commands that are executed with root privileges. The vulnerability is due to insufficient input validation of commands supplied by the user. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

A vulnerability in the CLI of Cisco FXOS Software could allow an authenticated, local attacker to inject arbitrary commands that are executed with root privileges. The vulnerability is due to insufficient input validation of commands supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and 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.

Metrics

CVSS 3.1

6.7/10

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

EPSS Probability

0.40%

31.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Firepower Extensible Operating System	>= 2.4, < 2.4.1.266
Cisco	Firepower Extensible Operating System	>= 2.6, < 2.6.1.204
Cisco	Firepower Extensible Operating System	>= 2.7, < 2.7.1.131
Cisco	Firepower Extensible Operating System	>= 2.8, < 2.8.1.125
Cisco	Adaptive Security Appliance Software	>= 9.8, < 9.8.4.29
Cisco	Adaptive Security Appliance Software	>= 9.9, < 9.9.2.80
Cisco	Adaptive Security Appliance Software	>= 9.10, < 9.10.1.40
Cisco	Adaptive Security Appliance Software	>= 9.12, < 9.12.4.3
Cisco	Adaptive Security Appliance Software	>= 9.13, < 9.13.1.13
Cisco	Firepower Threat Defense	>= 6.2.2, < 6.3.0.6
Cisco	Firepower Threat Defense	>= 6.4.0, < 6.4.0.9
Cisco	Firepower Threat Defense	>= 6.5.0, < 6.5.0.5

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-cmdinj-pqZvmXCrPatch, Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-cmdinj-pqZvmXCrPatch, Vendor Advisory

Timeline

Published: Oct 21, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3457?

How severe is CVE-2020-3457?

CVE-2020-3457 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3457?

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.

Are you affected by CVE-2020-3457?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST