Fortinet FortiClientEMS 7.4.4 sql injection

Summaryinfo

A vulnerability was found in Fortinet FortiClientEMS 7.4.4. It has been declared as critical. The affected element is an unknown function. The manipulation results in sql injection. This vulnerability was named CVE-2026-21643. The attack may be performed from remote. In addition, an exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Fortinet FortiClientEMS 7.4.4. Affected is some unknown processing. The manipulation with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An improper neutralization of special elements used in an sql command ('sql injection') vulnerability in Fortinet FortiClientEMS 7.4.4 may allow an unauthenticated attacker to execute unauthorized code or commands via specifically crafted HTTP requests.

The advisory is available at fortiguard.fortinet.com. This vulnerability is traded as CVE-2026-21643 since 01/02/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but an exploit is available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/16/2026). This vulnerability is assigned to T1505 by the MITRE ATT&CK project.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 304507 (Fortinet FortiClient EMS 7.4.4 SQLi (FG-IR-25-1142)), which helps to determine the existence of the flaw in a target environment. This issue was added on 04/13/2026 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 04/16/2026:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (304507) and CERT Bund (WID-SEC-2026-0343). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

• Fortinet FortiClient

Productinfo

Vendor

• Fortinet

Name

• FortiClientEMS

Version

• 7.4.4

License

• commercial

Website

• Vendor: https://www.fortinet.com/

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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