Fortinet FortiWeb up to 8.0.1 HTTP cookie validation

Summaryinfo

A vulnerability, which was classified as critical, has been found in Fortinet FortiWeb up to 7.0.11/7.2.11/7.4.10/7.6.5/8.0.1. The impacted element is an unknown function of the component HTTP Handler. The manipulation leads to cookie validation. This vulnerability is documented as CVE-2025-64447. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Fortinet FortiWeb up to 7.0.11/7.2.11/7.4.10/7.6.5/8.0.1. This issue affects an unknown functionality of the component HTTP Handler. The manipulation with an unknown input leads to a cookie validation vulnerability. Using CWE to declare the problem leads to CWE-565. The product relies on the existence or values of cookies when performing security-critical operations, but it does not properly ensure that the setting is valid for the associated user. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A reliance on cookies without validation and integrity checking vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.1, FortiWeb 7.6.0 through 7.6.5, FortiWeb 7.4.0 through 7.4.10, FortiWeb 7.2.0 through 7.2.11, FortiWeb 7.0.0 through 7.0.11 may allow an unauthenticated attacker to execute arbitrary operations on the system via crafted HTTP or HTTPS request via forged cookies, requiring prior knowledge of the FortiWeb serial number.

The advisory is shared at fortiguard.fortinet.com. The identification of this vulnerability is CVE-2025-64447 since 11/04/2025. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• Fortinet

Name

• FortiWeb

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7
• 7.0.8
• 7.0.9
• 7.0.10
• 7.0.11
• 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
• 7.2.10
• 7.2.11
• 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
• 7.6.0
• 7.6.1
• 7.6.2
• 7.6.3
• 7.6.4
• 7.6.5
• 8.0.0
• 8.0.1

License

• commercial

Website

• Vendor: https://www.fortinet.com/

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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