Fortinet FortiManager up to 7.4.11/7.6.7/8.0.0 injection

Summaryinfo

A vulnerability was found in Fortinet FortiManager up to 7.4.11/7.6.7/8.0.0. It has been declared as very critical. This affects an unknown part. Such manipulation leads to injection. This vulnerability is traded as CVE-2026-126220. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Fortinet FortiManager up to 7.4.11/7.6.7/8.0.0 and classified as very critical. Affected by this issue is some unknown processing. The manipulation with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A improper neutralization of special elements in output used by a downstream component ('injection') vulnerability in Fortinet FortiManager 8.0.0, FortiManager 7.6.0 through 7.6.7, FortiManager 7.4.0 through 7.4.11 may allow an authenticated administrator to read or write arbitrary files or execute unauthorized code or commands via specially crafted requests to the GUI.

The advisory is shared for download at fortiguard.fortinet.com. This vulnerability is handled as CVE-2026-126220 since 11/10/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are needed for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/11/2026). The MITRE ATT&CK project declares the attack technique as T1055.

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

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Productinfo

Vendor

• Fortinet

Name

• FortiManager

Version

• 7.4.0
• 7.4.1
• 7.4.2
• 7.4.3
• 7.4.4
• 7.4.5
• 7.4.6
• 7.4.7
• 7.4.8
• 7.4.9
• 7.4.10
• 7.4.11
• 7.6.0
• 7.6.1
• 7.6.2
• 7.6.3
• 7.6.4
• 7.6.5
• 7.6.6
• 7.6.7
• 8.0

License

• commercial

Website

• Vendor: https://www.fortinet.com/

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