Fortinet FortiMail up to 7.2.9/7.4.8/7.6.6/8.0.1 path traversal

Summaryinfo

A vulnerability categorized as very critical has been discovered in Fortinet FortiMail up to 7.2.9/7.4.8/7.6.6/8.0.1. The affected element is an unknown function. Executing a manipulation can lead to path traversal. The identification of this vulnerability is CVE-2026-126147. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as very critical was found in Fortinet FortiMail up to 7.2.9/7.4.8/7.6.6/8.0.1. This vulnerability affects an unknown functionality. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2 all versions may allow an unauthenticated attacker to execute unauthorized code or commands via crafted requests.

The advisory is shared for download at fortiguard.fortinet.com. This vulnerability was named CVE-2026-126147 since 11/10/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful 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 T1006.

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

• FortiMail

Version

• 7.2.0
• 7.2.1
• 7.2.2
• 7.2.3
• 7.2.4
• 7.2.5
• 7.2.6
• 7.2.7
• 7.2.8
• 7.2.9
• 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
• 7.6.0
• 7.6.1
• 7.6.2
• 7.6.3
• 7.6.4
• 7.6.5
• 7.6.6
• 8.0.0
• 8.0.1

License

• commercial

Website

• Vendor: https://www.fortinet.com/

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