6.1

CVE-2021-26087: fortinet fortiwlc Cross-site Scripting

CVSS: 6.1v3.1MediumAnalyzed
Published 17-03-2025Last modified 17-03-2025
Open JSON

Vulnerability summary

CVE-2021-26087 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in fortinet fortiwlc. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 25.3% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
0.34%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 17-03-2025
    PublishedVulnerability first disclosed.
  2. 17-03-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

25%

Versus all other CVEs

30-day change

0.00 pp

From 0.34% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.34%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Fortinet1 product
  • fortiwlc≥ 8.5.0, ≤ 8.5.3 | ≥ 8.4.4, ≤ 8.4.8 | ≥ 8.4.0, ≤ 8.4.2 | ≥ 8.4.4, < 8.5.4 | 8.3.3 | 8.6.0

1 vendor · 1 product

References

1 links