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Vulnerabilities

Vulnerability · CVE-2025-52436

An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.1, FortiSand

Published Feb 10, 2026 · catalog updated Feb 26, 2026 · Fortinet FortiSandbox

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-52436. EPSS is 7.31%. Act only if a listed version of Fortinet FortiSandbox is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
7.31%
Remediation
Vendor / distro source
Affected products
vendor Fortinet FortiSandbox 4.0.0 ≤4.0.6

An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.1, FortiSandbox 4.4.0 through 4.4.7, FortiSandbox 4.2 all versions, FortiSandbox 4.0 all versions may allow an unauthenticated attacker to execute commands via crafted requests.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Fortinet FortiSandbox 4.0.0 ≤4.0.64.0.0 ≤4.0.6

How to fix CVE-2025-52436

  • No stored fix

    No vendor fix text is stored. Use the linked advisory before you change production.

  • Version check

    Seen in 4.0.0 ≤4.0.6

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-52436. EPSS is 7.31%. Act only if a listed version of Fortinet FortiSandbox is installed.

Which versions are affected?

Compare what you have installed with Fortinet FortiSandbox 4.0.0 ≤4.0.6 4.0.0 ≤4.0.6. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 7.31%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Fortinet security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 10, 2026 · EUVD

    Detected

    An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.1, FortiSandbox 4.4.0 through 4.4.7, FortiSandbox 4.2 all versions, FortiSandbox 4.0 all versions may allow an unauthenticated attacker to execute commands via crafted requests.

  2. Feb 26, 2026 · EUVD

    Updated

    An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.1, FortiSandbox 4.4.0 through 4.4.7, FortiSandbox 4.2 all versions, FortiSandbox 4.0 all versions may allow an unauthenticated attacker to execute commands via crafted requests.

Sources

  • EUVDVulnerability recordEUVD-2025-206928

    An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.1, FortiSandbox 4.4.0 through 4.4.7, FortiSandbox 4.2 all versions, FortiSandbox 4.0 all versions may allow an u

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Feb 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • EUVDNov 2, 2026