Is CVE-2021-44171 being actively exploited?

CVE-2021-44171 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2021-44171?

CVE-2021-44171 has a CVSS 3.1 base score of 9.0 (CRITICAL).

CVE-2021-44171

CRITICAL · CVSS 9.0EPSS 1.5%EU EUVD

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.

Key facts

CVSS score: 9.0 (v3.1)
Severity: CRITICAL
CVSS vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-78
EPSS score: 1.5% (73th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2021-31021)
Published: October 10, 2022
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2021-31021 in the EU Vulnerability Database. Last updated in EUVD on October 25, 2024.

View on the EU Vulnerability Database

Affected products

fortinet / fortios

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

FortiGate/FortiOS Version 6.2.7 - Fortinet, Inc. - Common Criteria 559-LSS - archived

References

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

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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