CVE-2021-24009Network attack vector

Authenticated shell command execution via Web GUI

Published Apr 6, 2022 · Updated Oct 25, 2024

OS command injection in FortiWAN before 4.5.9 allows remote authenticated users to execute arbitrary shell commands via crafted HTTP requests. Fortinet identifies multiple Web GUI input-neutralization failures but does not disclose the affected handlers, parameters, or shell-command construction. Administrative access to the network-reachable GUI is required, and successful exploitation runs commands on the underlying appliance.

CVSS severity7.2
High
EPSS probability1.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

OS command injection in FortiWAN before 4.5.9 allows remote authenticated users to execute arbitrary shell commands via crafted HTTP requests. Fortinet identifies multiple Web GUI input-neutralization failures but does not disclose the affected handlers, parameters, or shell-command construction. Administrative access to the network-reachable GUI is required, and successful exploitation runs commands on the underlying appliance.

The record

CVE
CVE-2021-24009
Published
Apr 6, 2022
Updated
Oct 25, 2024
Vendor
Fortinet
Product
FortiWAN
Classifications
CWE-78, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 25, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=FortiWAN before 4.5.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Fortinet · FortiWANversion=FortiWAN before 4.5.9

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0NIST NVDAV:N/AC:L/Au:S/C:C/I:C/A:C
7.2Fortinet, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo