CVE-2026-59835
CVSSv3 Score: 7.7 An Exposure of Resource to Wrong Sphere vulnerability [CWE-668] in FortiSandbox may allow an unauthenticated attacker to access the VNC server of VMs performing scanning via network requests. Revised on 2026-07-14 00:00:00
CSIRTS triage
- What
- An unauthenticated attacker may access the VNC server of VMs performing scanning via network requests.
- Who is affected
- Deployments of FortiSandbox with VNC access enabled.
- Urgency
- Remediation is urgent due to the potential for unauthorized access.
- Action
- Restrict VNC access to authenticated users only.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.46% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 38% of all EPSS-scored CVEs.
Advisory coverage (5)
- unknownNCSC-2026-0245 [1.00] [M/H] Vulnerability fixed in Fortinet FortiSandboxncsc-nl · 2026-07-17
- high[NEW] [high] Fortinet FortiSandbox: Vulnerability allows bypassing security measurescert-bund · 2026-07-15
- unknownMultiple vulnerabilities in Fortinet products (July 15, 2026)cert-fr-avis · 2026-07-15
- highCVE-2026-59835: A exposure of resource to wrong sphere vulnerability in Fortinet FortiSandbox 5.0.0 through 5.…nvd · 2026-07-14
- unknownUnauthenticated VNC access exposed on all interfacesfortinet · 2026-07-14
External references
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