CVE-2021-26087

MEDIUM

FortiWLC <= 8.6.0, <= 8.5.3, <= 8.4.8, <= 8.3.3 - Stored Cross-Site Scripting via Web Interface

Title source: llm

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.

References (1)

Core 1

Core References

Vendor Advisory

https://fortiguard.fortinet.com/psirt/FG-IR-20-137

Scores

CVSS v3 4.3

EPSS 0.0011

EPSS Percentile 28.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (3)

fortinet/fortiwlc 8.3.3

fortinet/fortiwlc 8.6.0

fortinet/fortiwlc 8.4.0 - 8.4.2

Published Mar 17, 2025

Tracked Since Feb 18, 2026