High Threat Security Alert (A26-06-33): Multiple Vulnerabilities in Fortinet FortiSandbox

Description:

Fortinet released security advisories to address multiple vulnerabilities in Fortinet systems. An attacker could exploit these vulnerabilities by sending specially crafted requests to an affected system.

Reports indicate that proof-of-concept (PoC) exploit code is available for a remote code execution vulnerability (CVE-2026-39808) and an elevation of privilege (CVE-2026-39813) and they are at high risk of exploitation. System administrators are advised to take immediate action to patch affected systems to mitigate the elevated risk of cyber attacks.

Affected Systems:

• FortiSandbox version 4.4.0 through 4.4.8, version 5.0.0 through 5.0.5

For detailed information of the affected products, please refer to the section 'Affected Products' of corresponding security advisory at vendor's website.

Impact:

Successful exploitation of the vulnerabilities could lead to remote code execution, elevation of privilege, information disclosure or security restriction bypass on an affected system.

Recommendation:

Patches for affected systems are available. System administrators of affected systems should follow the recommendations provided by the vendor and take immediate actions to mitigate the risk.

More Information:

• https://fortiguard.fortinet.com/psirt/FG-IR-26-100
• https://fortiguard.fortinet.com/psirt/FG-IR-26-112
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-39808
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-39813