FortiSandbox 5.0.x & 4.4.x: Unauth VNC Server Exposure via Network
CVE-2026-59835 Published on July 14, 2026
A exposure of resource to wrong sphere vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.2, FortiSandbox 4.4.3 through 4.4.8 may allow an unauthenticated attacker to access the VNC server of VMs performing scanning via network requests.
Vulnerability Analysis
CVE-2026-59835 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
Exposure of Resource to Wrong Sphere
The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.
Products Associated with CVE-2026-59835
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Affected Versions
Fortinet FortiSandbox:- Version 5.0.0, <= 5.0.2 is affected.
- Version 4.4.3, <= 4.4.8 is affected.