CVE-2021-36185Network attack vector

Authenticated command execution via crafted HTTP requests

Published Nov 2, 2021 · Updated Oct 25, 2024

OS command injection in Fortinet FortiWLM 8.6.1 and earlier allows remote authenticated users to execute unauthorized commands via HTTP requests. Fortinet states that crafted requests reach an OS command execution path without neutralizing special elements, but does not identify the endpoint, parameter, or command-building routine. A low-privileged account is required, and successful exploitation runs commands in the FortiWLM service context; the resulting execution identity is undisclosed.

CVSS severity8.8
High
EPSS probability1.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Fortinet FortiWLM 8.6.1 and earlier allows remote authenticated users to execute unauthorized commands via HTTP requests. Fortinet states that crafted requests reach an OS command execution path without neutralizing special elements, but does not identify the endpoint, parameter, or command-building routine. A low-privileged account is required, and successful exploitation runs commands in the FortiWLM service context; the resulting execution identity is undisclosed.

The record

CVE
CVE-2021-36185
Published
Nov 2, 2021
Updated
Oct 25, 2024
Vendor
Fortinet
Product
FortiWLM
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 2, 2021CVE 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

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Is a vulnerable build present?

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

  1. Affected versionversion=FortiWLM 8.6.1, 8.6.0, 8.5.2, 8.5.1, 8.5.0, 8.4.2, 8.4.1, 8.4.0, 8.3.2, 8.3.1, 8.3.0, 8.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Fortinet · FortiWLMversion=FortiWLM 8.6.1, 8.6.0, 8.5.2, 8.5.1, 8.5.0, 8.4.2, 8.4.1, 8.4.0, 8.3.2, 8.3.1, 8.3.0, 8.2.2

Published CVSS scores

8.3FortinetCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:C
6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8FortinetCVSS:3.1/AV:N/AC:L/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
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

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Your stack

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