CVE-2025-52436

Name: CVE-2025-52436
Creator: NVD / NIST
Published: 2026-02-10T16:16:08.757+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.6/10EPSS 7.45%

Last modified Jun 17, 2026

CVE-2025-52436 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. 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.. EPSS estimates a 7.45% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.6/10

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

EPSS Probability

7.45%

93.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Fortinet	Fortisandbox	>= 4.0.0, < 4.4.8
Fortinet	Fortisandbox	>= 5.0.0, < 5.0.2

References

https://fortiguard.fortinet.com/psirt/FG-IR-25-093Vendor Advisory

Timeline

Published: Feb 10, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-52436?

How severe is CVE-2025-52436?

CVE-2025-52436 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 7.45% probability of exploitation in the next 30 days.

How do I fix CVE-2025-52436?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-52436?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST