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CVE-2026-21741

Quick assessment

Affected
Fortinet FortiNAC-F
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 FortiNAC-F是美国飞塔（Fortinet）公司的一套网络访问控制解决方案。该产品主要用于网络访问控制和物联网安全防护。 Fortinet FortiNAC-F 7.6.0至7.6.5版本、7.4版本和7.2版本存在输入验证错误漏洞，该漏洞源于URL重定向，可能导致远程特权攻击者将用户重定向到任意网站。

CVSS 2.2 · Low EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-21741

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An URL Redirection to Untrusted Site ('Open Redirect') vulnerability [CWE-601] vulnerability in Fortinet FortiNAC-F 7.6.0 through 7.6.5, FortiNAC-F 7.4 all versions, FortiNAC-F 7.2 all versions may allow a remote privileged attacker with system administrator role to redirect users to an arbitrary website via crafted CSV file.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
Fortinet FortiNAC-F 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fortinet FortiNAC-F是美国飞塔（Fortinet）公司的一套网络访问控制解决方案。该产品主要用于网络访问控制和物联网安全防护。 Fortinet FortiNAC-F 7.6.0至7.6.5版本、7.4版本和7.2版本存在输入验证错误漏洞，该漏洞源于URL重定向，可能导致远程特权攻击者将用户重定向到任意网站。
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 FortiNAC-F 7.6.0 ~ 7.6.5 -

II. Public POCs for CVE-2026-21741

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III. Intelligence Information for CVE-2026-21741

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Same Patch Batch · Fortinet · 2026-04-14 · 27 CVEs total

CVE-2026-39808 9.1 CRITICAL Fortinet FortiSandbox 操作系统命令注入漏洞
CVE-2026-39813 9.1 CRITICAL Fortinet FortiSandbox 安全漏洞
CVE-2026-39815 7.9 HIGH Fortinet FortiDDoS-F 安全漏洞
CVE-2026-22828 7.3 HIGH Fortinet FortiManager Cloud和Fortinet FortiAnalyzer Cloud 安全漏洞
CVE-2026-40688 6.7 MEDIUM Fortinet FortiWeb 缓冲区错误漏洞
CVE-2026-23708 6.7 MEDIUM Fortinet FortiSOAR PaaS和Fortinet FortiSOAR on-premise 授权问题漏洞
CVE-2025-61848 6.5 MEDIUM Fortinet多款产品 SQL注入漏洞
CVE-2026-39809 6.2 MEDIUM Fortinet FortiClientEms 安全漏洞
CVE-2025-53847 6.2 MEDIUM Fortinet FortiOS 访问控制错误漏洞
CVE-2026-22155 6.2 MEDIUM Fortinet FortiSOAR PaaS和Fortinet FortiSOAR on-premise 安全漏洞
CVE-2026-25691 6.2 MEDIUM Fortinet FortiSandbox 路径遍历漏洞
CVE-2026-39814 6.2 MEDIUM Fortinet FortiWeb 安全漏洞
CVE-2026-22573 6.2 MEDIUM Fortinet FortiSOAR PaaS和Fortinet FortiSOAR on-premise 路径遍历漏洞
CVE-2024-23104 5.4 MEDIUM Fortinet FortiNDR 信息泄露漏洞
CVE-2026-21742 5.4 MEDIUM Fortinet FortiSOAR PaaS和Fortinet FortiSOAR on-premise 安全漏洞
CVE-2025-68649 5.4 MEDIUM Fortinet多款产品 路径遍历漏洞
CVE-2025-61624 5.4 MEDIUM Fortinet多款产品 路径遍历漏洞
CVE-2026-39810 5.2 MEDIUM Fortinet FortiClientEMS 安全漏洞
CVE-2025-61886 4.9 MEDIUM Fortinet FortiSandbox 跨站脚本漏洞
CVE-2026-39811 4.4 MEDIUM Fortinet FortiWeb 输入验证错误漏洞

Showing top 20 of 27 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: FortiNAC-F
Same vendor: Fortinet
Same weakness: CWE-601

V. Comments for CVE-2026-21741

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