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CVE-2026-59839

Quick assessment

Affected
Fortinet FortiProxy
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 fortios是美国Fortinet公司的一款安全操作系统。 Fortinet FortiOS存在路径遍历漏洞，该漏洞源于对路径名的限制不当（路径遍历），可能导致攻击者执行未经授权的代码或命令。以下版本受到影响：FortiOS 7.6.0至7.6.6版本、7.4.0至7.4.9版本、7.2全部版本、7.0全部版本、6.4全部版本；FortiPAM 1.8.0版本、1.7.0至1.7.2版本、1.6全部版本、1.5全部版本、1.4全部版本、1.3全部版本、1.2全部版本、1.1全部版本、1

CVSS 5.0 · Medium EPSS 0.22% · P13

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Fortinet FortiOS 7.6.0≤ 7.6.6 affected
7.4.0≤ 7.4.9 affected
7.2.0≤ 7.2.13 affected
7.0.0≤ 7.0.19 affected
6.4.0≤ 6.4.16 affected
Fortinet FortiPAM 1.8.0 affected
1.7.0≤ 1.7.2 affected
1.6.0≤ 1.6.2 affected
1.5.0≤ 1.5.1 affected
1.4.0≤ 1.4.3 affected
1.3.0≤ 1.3.1 affected
1.2.0 affected
1.1.0≤ 1.1.2 affected
… +1 more rows
Fortinet FortiProxy 7.6.0≤ 7.6.5 affected
7.4.0≤ 7.4.13 affected
7.2.0≤ 7.2.16 affected
7.0.0≤ 7.0.23 affected
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I. Basic Information for CVE-2026-59839

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiPAM 1.8.0, FortiPAM 1.7.0 through 1.7.2, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.6.0 through 7.6.5, FortiProxy 7.4 through 7.4.13, FortiProxy 7.2 all versions, FortiProxy 7.0 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Fortinet FortiOS 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fortinet fortios是美国Fortinet公司的一款安全操作系统。 Fortinet FortiOS存在路径遍历漏洞，该漏洞源于对路径名的限制不当（路径遍历），可能导致攻击者执行未经授权的代码或命令。以下版本受到影响：FortiOS 7.6.0至7.6.6版本、7.4.0至7.4.9版本、7.2全部版本、7.0全部版本、6.4全部版本；FortiPAM 1.8.0版本、1.7.0至1.7.2版本、1.6全部版本、1.5全部版本、1.4全部版本、1.3全部版本、1.2全部版本、1.1全部版本、1
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 FortiProxy 7.6.0 ~ 7.6.5 cpe:2.3:a:fortinet:fortiproxy:7.6.5:*:*:*:*:*:*:*
Fortinet FortiOS 7.6.0 ~ 7.6.6 cpe:2.3:o:fortinet:fortios:7.6.6:*:*:*:*:*:*:*
Fortinet FortiPAM 1.8.0 cpe:2.3:o:fortinet:fortipam:1.8.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-59839

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III. Intelligence Information for CVE-2026-59839

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Vendor Advisories for CVE-2026-59839 (1)

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

CVE-2026-59835 7.7 HIGH Fortinet FortiSandbox 权限许可和访问控制问题漏洞
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-2026-59840 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: FortiProxy
Same vendor: Fortinet
Same weakness: CWE-22

V. Comments for CVE-2026-59839

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