Is CVE-2021-44170 being actively exploited?

CVE-2021-44170 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2021-44170?

CVE-2021-44170 has a CVSS 3.1 base score of 6.7 (MEDIUM).

CVE-2021-44170

MEDIUM · CVSS 6.7EPSS 0.2%EU EUVD

A stack-based buffer overflow vulnerability [CWE-121] in the command line interpreter of FortiOS before 7.0.4 and FortiProxy before 2.0.8 may allow an authenticated attacker to execute unauthorized code or commands via specially crafted command line arguments.

Key facts

CVSS score: 6.7 (v3.1)
Severity: MEDIUM
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-787
EPSS score: 0.2% (10th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2021-31020)
Published: July 18, 2022
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2021-31020 in the EU Vulnerability Database. Last updated in EUVD on October 25, 2024.

View on the EU Vulnerability Database

Affected products

fortinet / fortios
fortinet / fortiproxy

Certified products that may be affected

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

FortiGate/FortiOS Version 6.2.7 - Fortinet, Inc. - Common Criteria 559-LSS - archived
FortiProxy-400E/2000E/4000E - Fortinet, Inc. - FIPS 140 3628 - historical
Fortinet FortiProxy v1.0 - Fortinet, Inc. - Common Criteria 383-4-475 - archived

References

https://fortiguard.com/psirt/FG-IR-21-179(Vendor Advisory)

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

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