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CVE-2021-26087

Quick assessment

Affected
Fortinet FortiWLC
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 FortiWLC是美国飞塔（Fortinet）公司的一款无线局域网控制器。 FortiWLC web界面存在跨站脚本漏洞，该漏洞允许远程攻击者可利用该漏洞执行跨站点脚本(XSS)攻击。受影响的产品及版本如下:FortiWLC: 8.5.0、8.5.1、8.5.2、8.5.3、8.6.0

CVSS 4.2 · Medium EPSS 0.33% · P26
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I. Basic Information for CVE-2021-26087

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An improper neutralization of input during web page generation in FortiWLC version 8.6.0, version 8.5.3 and below, version 8.4.8 and below, version 8.3.3 web interface may allow both authenticated remote attackers and non-authenticated attackers in the same network as the appliance to perform a stored cross site scripting attack (XSS) via injecting malicious payloads in different locations.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
FortiWLC web界面 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fortinet FortiWLC是美国飞塔（Fortinet）公司的一款无线局域网控制器。 FortiWLC web界面存在跨站脚本漏洞，该漏洞允许远程攻击者可利用该漏洞执行跨站点脚本(XSS)攻击。受影响的产品及版本如下:FortiWLC: 8.5.0、8.5.1、8.5.2、8.5.3、8.6.0
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 FortiWLC 8.6.0 cpe:2.3:a:fortinet:fortiwlc:8.6.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2021-26087

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III. Intelligence Information for CVE-2021-26087

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Vendor Advisories for CVE-2021-26087 (1)

Same Patch Batch · Fortinet · 2025-03-17 · 9 CVEs total

CVE-2024-54027 7.8 HIGH Fortinet FortiSandbox 安全漏洞
CVE-2021-22126 6.5 MEDIUM 4Gon Meru Networks Access Points 信任管理问题漏洞
CVE-2019-6697 5.2 MEDIUM Fortinet FortiGate 跨站脚本漏洞
CVE-2020-29010 4.9 MEDIUM FortiGate 安全漏洞
CVE-2021-32584 4.8 MEDIUM FortiWLC 访问控制错误漏洞
CVE-2020-9295 4.7 MEDIUM Fortinet FortiClient 和 FortiOS 安全漏洞
CVE-2019-15706 4.0 MEDIUM Fortinet FortiOS 跨站脚本漏洞
CVE-2019-17659 3.6 LOW Fortinet FortiSIEM 安全漏洞

IV. Related Vulnerabilities

Same product: FortiWLC
Same vendor: Fortinet
Same weakness: CWE-79

V. Comments for CVE-2021-26087

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