CVE-2021-44171

Name: CVE-2021-44171
Creator: NVD / NIST
Published: 2022-10-10T14:15:09.65+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8/10EPSS 1.53%

Last modified Jun 17, 2026

CVE-2021-44171 is a high-severity vulnerability rated 8/10 on the CVSS scale. A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiOS version 6.0.0 through 6.0.14, FortiOS version 6.2.0 through 6.2.10, FortiOS version 6.4.0 through 6.4.8, FortiOS version 7.0.0 through 7.0.3 allows attacker to execute privileged commands on a linked FortiSwitch via diagnostic CLI commands.. EPSS estimates a 1.53% chance of exploitation in the next 30 days.

Description

A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiOS version 6.0.0 through 6.0.14, FortiOS version 6.2.0 through 6.2.10, FortiOS version 6.4.0 through 6.4.8, FortiOS version 7.0.0 through 7.0.3 allows attacker to execute privileged commands on a linked FortiSwitch via diagnostic CLI commands.

Metrics

CVSS 3.1

8/10

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

EPSS Probability

1.53%

71.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Fortinet	Fortios	>= 6.0.0, <= 6.0.14
Fortinet	Fortios	>= 6.2.0, <= 6.2.10
Fortinet	Fortios	>= 6.4.0, <= 6.4.8
Fortinet	Fortios	>= 7.0.0, <= 7.0.3

References

https://fortiguard.com/psirt/FG-IR-21-242Vendor Advisory
https://fortiguard.com/psirt/FG-IR-21-242Vendor Advisory

Timeline

Published: Oct 10, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-44171?

How severe is CVE-2021-44171?

CVE-2021-44171 has a CVSS score of 8/10 (HIGH severity). The EPSS model estimates a 1.53% probability of exploitation in the next 30 days.

How do I fix CVE-2021-44171?

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-2021-44171?

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

Scan your code now

Source: NVD / NIST