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CVE-2026-22153

Quick assessment

Affected
Fortinet FortiOS
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Fortinet FortiOS是美国飞塔（Fortinet）公司的一套专用于FortiGate网络安全平台上的安全操作系统。该系统为用户提供防火墙、防病毒、IPSec/SSLVPN、Web内容过滤和反垃圾邮件等多种安全功能。 Fortinet FortiOS 7.6.0版本至7.6.4版本存在安全漏洞，该漏洞源于主要弱点身份验证绕过，可能导致未经身份验证的攻击者在特定LDAP服务器配置下绕过Agentless VPN或FSSO策略的身份验证。

CVSS 7.5 · High EPSS 0.76% · P54
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I. Basic Information for CVE-2026-22153

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An Authentication Bypass by Primary Weakness vulnerability [CWE-305] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4 may allow an unauthenticated attacker to bypass LDAP authentication of Agentless VPN or FSSO policy, when the remote LDAP server is configured in a specific way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用基本弱点进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Fortinet FortiOS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fortinet FortiOS是美国飞塔（Fortinet）公司的一套专用于FortiGate网络安全平台上的安全操作系统。该系统为用户提供防火墙、防病毒、IPSec/SSLVPN、Web内容过滤和反垃圾邮件等多种安全功能。 Fortinet FortiOS 7.6.0版本至7.6.4版本存在安全漏洞，该漏洞源于主要弱点身份验证绕过，可能导致未经身份验证的攻击者在特定LDAP服务器配置下绕过Agentless VPN或FSSO策略的身份验证。
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 ~ 7.6.4 cpe:2.3:o:fortinet:fortios:7.6.4:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-22153

# POC Description Source Link Shenlong Link
1 None https://github.com/washingtonmaister/CVE-2026-22153-exp POC Details
2 None https://github.com/glitchhawks/CVE-2026-22153 POC Details
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No public POC found.

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III. Intelligence Information for CVE-2026-22153

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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-2026-21743 6.8 MEDIUM Fortinet FortiAuthenticator 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: FortiOS
Same vendor: Fortinet
Same weakness: CWE-305

V. Comments for CVE-2026-22153

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