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CVE-2026-84386

Quick assessment

Affected
Fortinet FortiClientWindows
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 FortiClient for Windows 7.4.0 至 7.4.7 版本以及 FortiClient for Windows 7.2 的所有版本中存在一个未验证所有权（Unverified Ownership）漏洞。该漏洞可能允许攻击者通过【此处需插入具体攻击向量】实现不当的访问控制，从而获得非预期的访问权限。

CVSS 4.7 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
Fortinet FortiClientWindows 7.4.0≤ 7.4.7 affected
7.2.0≤ 7.2.15 affected
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I. Basic Information for CVE-2026-84386

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A unverified ownership vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.7, FortiClientWindows 7.2 all versions may allow attacker to improper access control via <insert attack vector here>
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经验证的属主
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Fortinet FortiClientWindows 7.4.0 ~ 7.4.7 cpe:2.3:a:fortinet:forticlientwindows:7.4.7:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-84386

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III. Intelligence Information for CVE-2026-84386

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Vendor Advisories for CVE-2026-84386 (1)

Same Patch Batch · Fortinet · 2026-09-08 · 9 CVEs total

CVE-2026-26084 8.9 HIGH FortiSandbox 4.4.8/5.0.5 访问控制缺陷
CVE-2026-84393 7.3 HIGH FortiOS 7.6.1-7.6.6证书主机不匹配漏洞
CVE-2026-84387 6.7 MEDIUM FortiSandbox 5.2.0 等版本命令注入漏洞
CVE-2026-84391 5.9 MEDIUM FortiAnalyzer 7.6.3-7.6.6 未初始化变量致拒绝服务
CVE-2026-84385 4.9 MEDIUM FortiSOAR 7.3-7.6 权限提升漏洞
CVE-2026-22575 4.7 MEDIUM FortiManager 7.x 访问控制缺陷
CVE-2026-84389 2.8 LOW FortiSIEM 7.4/7.5 开放重定向漏洞
CVE-2026-84392 2.5 LOW FortiOS/FortiPAM空指针解引用漏洞

IV. Related Vulnerabilities

Same product: FortiClientWindows
Same vendor: Fortinet
Same weakness: CWE-283

V. Comments for CVE-2026-84386

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