CVE-2021-24014Network attack vector

Script execution via crafted request parameters

Published Aug 4, 2021 · Updated Oct 25, 2024

Cross-site scripting in Fortinet FortiSandbox before 4.0.0 allows remote attackers to execute script via crafted request parameters. Fortinet identifies multiple request parameters but has not disclosed the affected endpoints or the precise output-encoding failure. Exploitation requires user interaction; the resulting script runs in the victim browser context and can read or alter data available to that session.

CVSS severityUnavailable
Unscored
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Fortinet FortiSandbox before 4.0.0 allows remote attackers to execute script via crafted request parameters. Fortinet identifies multiple request parameters but has not disclosed the affected endpoints or the precise output-encoding failure. Exploitation requires user interaction; the resulting script runs in the victim browser context and can read or alter data available to that session.

The record

CVE
CVE-2021-24014
Published
Aug 4, 2021
Updated
Oct 25, 2024
Vendor
Fortinet
Product
FortiSandbox
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 4, 2021CVE publishedPublication date reported by the CVE source.
  2. Oct 25, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=FortiSandbox before 4.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fortinet · FortiSandboxversion=FortiSandbox before 4.0.0

Published CVSS scores

5.0FortinetCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:X/RC:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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