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CVE-2026-104286

Quick assessment

Affected
Fortinet FortiMail
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 FortiMail 8.0.0 至 8.0.1、7.6.0 至 7.6.6、7.4.0 至 7.4.8 以及 7.2.0 至 7.2.9 版本中存在一个路径遍历（path traversal）漏洞，该漏洞源于对文件路径未正确限制在指定目录内。未经身份验证的攻击者可通过构造恶意的 HTTP 或 HTTPS 请求，在底层系统上写入任意文件。

CVSS 9.8 · Critical
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I. Basic Information for CVE-2026-104286

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2.0 through 7.2.9 may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS 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: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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Fortinet FortiMail 8.0.0 cpe:2.3:a:fortinet:fortimail:8.0.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-104286

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-104286

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Other References for CVE-2026-104286 (1)

IV. Related Vulnerabilities

Same product: FortiMail
Same vendor: Fortinet
Same weakness: CWE-22

V. Comments for CVE-2026-104286

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