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CVE-2026-71408

Quick assessment

Affected
Fortinet FortiOS
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公司的一款防火墙软件。 Fortinet FortiOS 7.6.0至7.6.6版本、7.4所有版本和7.2所有版本存在资源管理错误漏洞，该漏洞源于资源分配无限制或缺少节流，可能导致拒绝服务攻击。

CVSS 5.0 · Medium EPSS 0.40% · P32

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 5

VendorProduct Version RangeStatus
Fortinet FortiOS 7.6.0≤ 7.6.6 affected
7.4.0≤ 7.4.12 affected
7.2.0≤ 7.2.13 affected
7.0.0≤ 7.0.19 affected
6.4.0≤ 6.4.16 affected
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I. Basic Information for CVE-2026-71408

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A allocation of resources without limits or throttling vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4 all versions, FortiOS 7.2 all versions may allow attacker to denial of service via <insert attack vector here>
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Fortinet FortiOS 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fortinet FortiOS是美国Fortinet公司的一款防火墙软件。 Fortinet FortiOS 7.6.0至7.6.6版本、7.4所有版本和7.2所有版本存在资源管理错误漏洞，该漏洞源于资源分配无限制或缺少节流，可能导致拒绝服务攻击。
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 FortiOS 7.6.0 ~ 7.6.6 cpe:2.3:o:fortinet:fortios:7.6.6:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-71408

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-71408

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Vendor Advisories for CVE-2026-71408 (1)

Same Patch Batch · Fortinet · 2026-08-12 · 7 CVEs total

CVE-2026-26035 8.8 HIGH Fortinet FortiWeb 授权问题漏洞
CVE-2026-70465 7.3 HIGH Fortinet forticlientwindows 缓冲区错误漏洞
CVE-2026-70468 7.3 HIGH Fortinet fortimanager 授权问题漏洞
CVE-2026-71407 5.1 MEDIUM Fortinet FortiOS 缓冲区错误漏洞
CVE-2026-70466 4.8 MEDIUM Fortinet FortiWeb 输入验证错误漏洞
CVE-2026-70467 3.4 LOW Fortinet fortisiem 服务端请求伪造漏洞

IV. Related Vulnerabilities

Same product: FortiOS
Same vendor: Fortinet
Same weakness: CWE-770

V. Comments for CVE-2026-71408

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