Fortinet FortiWeb up to 7.4.12/7.6.6/8.0.2 path traversal

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Fortinet FortiWeb up to 7.4.12/7.6.6/8.0.2. This affects an unknown function. The manipulation leads to path traversal. This vulnerability is referenced as CVE-2026-39814. The attack can only be performed from a local environment. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Fortinet FortiWeb up to 7.4.12/7.6.6/8.0.2. This issue affects an unknown functionality. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-23. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A relative path traversal vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.1 through 7.4.12, FortiWeb 7.2.7 through 7.2.12, FortiWeb 7.0.10 through 7.0.12 may allow attacker to execute unauthorized code or commands via

The advisory is shared at fortiguard.fortinet.com. The identification of this vulnerability is CVE-2026-39814 since 04/07/2026. The exploitation is known to be easy. An attack has to be approached locally. The exploitation requires an enhanced level of successful authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Firewall Software

Vendor

• Fortinet

Name

• FortiWeb

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
• 7.4.12
• 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
• 8.0.2

License

• commercial

Website

• Vendor: https://www.fortinet.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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