CVE-2021-24017Network attack vector

Unauthorized policy assignment via crafted requests

Published Sep 30, 2021 · Updated Oct 25, 2024

Improper authentication in Fortinet FortiManager 6.4.3/6.2.6 and earlier allows remote authenticated users to assign Policy and Object modules via crafted requests. The request handler accepts module-assignment requests without correctly authenticating the caller, allowing unauthorized policy and object changes. Access requires a valid authenticated account and network reachability; the published impact is integrity modification without reported confidentiality loss.

CVSS severity4.3
Medium
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Fortinet FortiManager 6.4.3/6.2.6 and earlier allows remote authenticated users to assign Policy and Object modules via crafted requests. The request handler accepts module-assignment requests without correctly authenticating the caller, allowing unauthorized policy and object changes. Access requires a valid authenticated account and network reachability; the published impact is integrity modification without reported confidentiality loss.

The record

CVE
CVE-2021-24017
Published
Sep 30, 2021
Updated
Oct 25, 2024
Vendor
Fortinet
Product
FortiManager
Classifications
CWE-287, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 30, 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=FortiManager 6.4.3, 6.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Fortinet · FortiManagerversion=FortiManager 6.4.3, 6.2.6

Published CVSS scores

4.3NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.0NVDAV:N/AC:L/Au:S/C:N/I:P/A:N
5.4Fortinet, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

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-287Improper Authentication
T1190Exploit Public-Facing Application

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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