CVE-2026-59835: 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

highCVSS 8.6CVE-2026-59835

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.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: high — CVSS 8.6
Published: 2026-07-14
Last updated: 2026-07-15
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-59835

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-598350.46% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 38% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-59835	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownNCSC-2026-0245 [1.00] [M/H] Vulnerability fixed in Fortinet FortiSandboxncsc-nl
high[NEW] [high] Fortinet FortiSandbox: Vulnerability allows bypassing security measurescert-bund
unknownMultiple vulnerabilities in Fortinet products (July 15, 2026)cert-fr-avis
unknownUnauthenticated VNC access exposed on all interfacesfortinet

Recent advisories for A exposure of

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

mediumCVE-2026-18059: The PixelYourSite – Your smart PIXEL (TAG) & API Manager plugin for WordPress is vulnerable to…nvd · 2026-08-01
mediumCVE-2026-2916: The Jeg Kit for Elementor plugin for WordPress is vulnerable to Sensitive Information Exposure …nvd · 2026-08-01
mediumCVE-2026-56569: HCL iControl was affected by Sensitive Data Exposure vulnerabilities. It involves the public e…nvd · 2026-07-31
lowCVE-2026-56568: HCL iControl was affected by Information Exposure Through Verbose Client-Side API Error Messag…nvd · 2026-07-31
mediumCVE-2026-56567: HCL iControl v4.3.0 was affected by Security Misconfiguration vulnerabilities. It involves the…nvd · 2026-07-31
highGHSA-4vmm-5qvc-w5p7: Easy!Appointments Vulnerable to Appointments Takeover via Excessive Data Exposureghsa · 2026-07-29