Home/CVE/An improper neutralization of input vulnerability [CWE-79] in FortiAnalyzer versions 6.4.3 and below, 6.2.7 and below an
CVE

CVE-2021-24021

An improper neutralization of input vulnerability [CWE-79] in FortiAnalyzer versions 6.4.3 and below, 6.2.7 and below an

An improper neutralization of input vulnerability [CWE-79] in FortiAnalyzer versions 6.4.3 and below, 6.2.7 and below and 6.0.10 and below may allow a remote authenticated attacker to perform a stored cross site scripting attack (XSS) via the column settings of Logview in FortiAnalyzer, should the attacker be able to obtain that POST request, via other, hypothetical attacks.

MEDIUM · CVSS 4.3 EPSS 0.00187
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

2
fortinet fortianalyzer>= 6.0.0 and < 6.2.8
fortinet fortianalyzer>= 6.4.0 and < 6.4.4
▣

Scoring & Timeline

4.3
MEDIUM · CVSS v3.1 · psirt@fortinet.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 Oct 2021 · 10:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://fortiguard.com/advisory/FG-IR-20-098Vendor Advisory
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