Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-21743

Quick assessment

Affected
Fortinet FortiAuthenticator
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 FortiAuthenticator是美国飞塔（Fortinet）公司的一款集中式的用户身份管理解决方案。 Fortinet FortiAuthenticator 6.6.0版本至6.6.6版本、6.5所有版本、6.4所有版本和6.3所有版本存在安全漏洞，该漏洞源于缺少授权检查，可能导致只读用户通过文件上传修改本地用户。

CVSS 6.8 · High EPSS 0.36% · P27
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-21743

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all versions, FortiAuthenticator 6.4 all versions, FortiAuthenticator 6.3 all versions may allow a read-only user to make modification to local users via a file upload to an unprotected endpoint.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Fortinet FortiAuthenticator 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fortinet FortiAuthenticator是美国飞塔（Fortinet）公司的一款集中式的用户身份管理解决方案。 Fortinet FortiAuthenticator 6.6.0版本至6.6.6版本、6.5所有版本、6.4所有版本和6.3所有版本存在安全漏洞，该漏洞源于缺少授权检查，可能导致只读用户通过文件上传修改本地用户。
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 FortiAuthenticator 6.6.0 ~ 6.6.6 cpe:2.3:a:fortinet:fortiauthenticator:6.6.6:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-21743

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-21743

请登录查看更多情报信息。

Same Patch Batch · Fortinet · 2026-02-10 · 8 CVEs total

CVE-2025-52436 7.9 HIGH Fortinet FortiSandbox 跨站脚本漏洞
CVE-2026-22153 7.5 HIGH Fortinet FortiOS 安全漏洞
CVE-2025-64157 6.7 MEDIUM Fortinet FortiOS 格式化字符串错误漏洞
CVE-2025-62676 6.4 MEDIUM Fortinet FortiClientWindows 后置链接漏洞
CVE-2025-68686 5.3 MEDIUM Fortinet FortiOS 信息泄露漏洞
CVE-2025-55018 5.2 MEDIUM Fortinet FortiOS 环境问题漏洞
CVE-2025-62439 3.8 LOW Fortinet FortiOS 安全漏洞

IV. Related Vulnerabilities

Same product: FortiAuthenticator
Same vendor: Fortinet
Same weakness: CWE-862

V. Comments for CVE-2026-21743

No comments yet

Leave a comment