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CVE-2026-59835

Quick assessment

Affected
Fortinet FortiSandbox
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Fortinet fortisandbox是美国Fortinet公司的一款恶意软件分析设备。 Fortinet FortiSandbox 5.0.0至5.0.2版本和4.4.3至4.4.8版本存在权限许可和访问控制问题漏洞，该漏洞源于资源暴露给错误范围问题，可能导致未经身份验证的攻击者通过网络请求访问扫描VM的VNC服务器。

CVSS 7.7 · High EPSS 0.40% · P31

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
Fortinet FortiSandbox 5.0.0≤ 5.0.2 affected
4.4.3≤ 4.4.8 affected
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I. Basic Information for CVE-2026-59835

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
将资源暴露给错误范围
Source: CVE Program / CVE List V5
Vulnerability Title
Fortinet FortiSandbox 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fortinet fortisandbox是美国Fortinet公司的一款恶意软件分析设备。 Fortinet FortiSandbox 5.0.0至5.0.2版本和4.4.3至4.4.8版本存在权限许可和访问控制问题漏洞，该漏洞源于资源暴露给错误范围问题，可能导致未经身份验证的攻击者通过网络请求访问扫描VM的VNC服务器。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Fortinet FortiSandbox 5.0.0 ~ 5.0.2 cpe:2.3:a:fortinet:fortisandbox:5.0.2:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-59835

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III. Intelligence Information for CVE-2026-59835

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Vendor Advisories for CVE-2026-59835 (1)

Same Patch Batch · Fortinet · 2026-07-14 · 11 CVEs total

CVE-2025-53379 7.0 HIGH Fortinet FortiAuthenticator 缓冲区错误漏洞
CVE-2026-59841 6.9 MEDIUM Fortinet FortiSIEMWindowsAgent 授权问题漏洞
CVE-2026-59836 6.7 MEDIUM Fortinet FortiClientEMS 加密问题漏洞
CVE-2026-23573 6.1 MEDIUM Fortinet FortiOS 跨站脚本漏洞
CVE-2026-59837 5.9 MEDIUM Fortinet FortiOS 缓冲区错误漏洞
CVE-2026-59839 5.0 MEDIUM Fortinet FortiOS 路径遍历漏洞
CVE-2026-59840 4.1 MEDIUM Fortinet FortiOS 缓冲区错误漏洞
CVE-2025-43892 4.1 MEDIUM Fortinet FortiOS 缓冲区错误漏洞
CVE-2025-62675 3.4 LOW Fortinet FortiOS 输入验证错误漏洞
CVE-2025-62826 3.1 LOW Fortinet FortiOS 输入验证错误漏洞

IV. Related Vulnerabilities

Same product: FortiSandbox
Same vendor: Fortinet
Same weakness: CWE-668

V. Comments for CVE-2026-59835

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