Fortinet FortiClientWindows up to 7.2.8/7.4.3 fortips_74.sys heap-based overflow

Summaryinfo

A vulnerability has been found in Fortinet FortiClientWindows up to 7.2.8/7.4.3 and classified as critical. The impacted element is an unknown function in the library fortips_74.sys. The manipulation leads to heap-based overflow. This vulnerability is uniquely identified as CVE-2025-46373. Local access is required to approach this attack. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Fortinet FortiClientWindows up to 7.2.8/7.4.3. This issue affects an unknown part in the library fortips_74.sys. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A Heap-based Buffer Overflow vulnerability [CWE-122] vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.3, FortiClientWindows 7.2.0 through 7.2.8 may allow an authenticated local IPSec user to execute arbitrary code or commands via "fortips_74.sys". The attacker would need to bypass the Windows heap integrity protections

It is possible to read the advisory at fortiguard.fortinet.com. The identification of this vulnerability is CVE-2025-46373 since 04/23/2025. The exploitation is known to be difficult. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 7.2.9 or 7.4.4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-198018). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Fortinet

Name

• FortiClientWindows

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
• 7.4.0
• 7.4.1
• 7.4.2
• 7.4.3

License

• commercial

Website

• Vendor: https://www.fortinet.com/

CPE 2.3info

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Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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