CVE-2021-26102
Quick assessment
Affected
Fortinet FortiWAN
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.
Avfirewalls FortiWAN是美国Avfirewalls公司的一个网络设备。用于平衡多个WAN连接上的Internet和Intranet流量。 FortiWAN 存在授权问题漏洞，该漏洞源于身份验证过程中的错误。以下产品及版本受到影响：FortiWAN: before 5.1.1。
Possible ATT&CK Techniques 3 AI
T1078 · Valid Accounts T1083 · File and Directory Discovery T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-26102
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A relative path traversal vulnerability (CWE-23) in FortiWAN version 4.5.7 and below, 4.4 all versions may allow a remote non-authenticated attacker to delete files on the system by sending a crafted POST request. In particular, deleting specific configuration files will reset the Admin password to its default value.
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
使用基本弱点进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Avfirewalls FortiWAN 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Avfirewalls FortiWAN是美国Avfirewalls公司的一个网络设备。用于平衡多个WAN连接上的Internet和Intranet流量。 FortiWAN 存在授权问题漏洞，该漏洞源于身份验证过程中的错误。以下产品及版本受到影响：FortiWAN: before 5.1.1。
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)
Shenlong Deep Dive — AI Deep Analysis
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Affected Products
II. Public POCs for CVE-2021-26102
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | PoC of FortiWAN auth bypass (https://www.fortiguard.com/psirt/FG-IR-21-048) | https://github.com/SleepyCofe/CVE-2021-26102 | POC Details |
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2021-26102 (1)
Same Patch Batch · Fortinet · 2024-12-19 · 7 CVEs total
| CVE-2020-15934 | 8.6 HIGH | Fortinet FortiClient 安全漏洞 |
| CVE-2021-32589 | 7.7 HIGH | Fortinet FortiManager 和 Fortinet FortiAnalyzer 资源管理错误漏洞 |
| CVE-2021-26115 | 7.6 HIGH | Avfirewalls FortiWAN 操作系统命令注入漏洞 |
| CVE-2021-26093 | 6.6 MEDIUM | Fortinet FortiWLC 缓冲区错误漏洞 |
| CVE-2020-12820 | 5.4 MEDIUM | Fortinet FortiOS 缓冲区错误漏洞 |
| CVE-2020-12819 | 5.4 MEDIUM | FortiOS 安全漏洞 |
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V. Comments for CVE-2021-26102
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