CVE-2022-40677

Name: CVE-2022-40677
Creator: NVD / NIST
Published: 2023-02-16T19:15:13.25+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.77%

Last modified Jun 17, 2026

CVE-2022-40677 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A improper neutralization of argument delimiters in a command ('argument injection') in Fortinet FortiNAC versions 9.4.0, 9.2.0 through 9.2.5, 9.1.0 through 9.1.7, 8.8.0 through 8.8.11, 8.7.0 through 8.7.6, 8.6.0 through 8.6.5, 8.5.0 through 8.5.4, 8.3.7 allows attacker to execute unauthorized code or commands via specially crafted input parameters.. EPSS estimates a 0.77% chance of exploitation in the next 30 days.

Description

A improper neutralization of argument delimiters in a command ('argument injection') in Fortinet FortiNAC versions 9.4.0, 9.2.0 through 9.2.5, 9.1.0 through 9.1.7, 8.8.0 through 8.8.11, 8.7.0 through 8.7.6, 8.6.0 through 8.6.5, 8.5.0 through 8.5.4, 8.3.7 allows attacker to execute unauthorized code or commands via specially crafted input parameters.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.77%

51.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Fortinet	Fortinac	>= 8.5.0, <= 8.5.4
Fortinet	Fortinac	>= 8.6.0, <= 8.6.5
Fortinet	Fortinac	>= 8.7.0, <= 8.7.6
Fortinet	Fortinac	>= 8.8.0, <= 8.8.11
Fortinet	Fortinac	>= 9.1.0, <= 9.1.7
Fortinet	Fortinac	>= 9.2.0, <= 9.2.5
Fortinet	Fortinac	8.3.7
Fortinet	Fortinac	9.4.0

References

https://fortiguard.com/psirt/FG-IR-22-280Patch, Vendor Advisory
https://fortiguard.com/psirt/FG-IR-22-280Patch, Vendor Advisory

Timeline

Published: Feb 16, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-40677?

How severe is CVE-2022-40677?

CVE-2022-40677 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.77% probability of exploitation in the next 30 days.

How do I fix CVE-2022-40677?

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-2022-40677?

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

Scan your code now

Source: NVD / NIST