Fortisandbox
CVE-2025-52436
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS 8.8 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: Required. Exploitation no authentication required. Exploitable via remote/network. |
| Exploit ScenarioDerived | A remote attacker without authentication could exploit this vulnerability to an unauthenticated attacker to execute commands via crafted requests. |
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Alert meAnalysisAIv1 – Mar 12, 2026
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. [CVSS 8.8 HIGH]
RemediationAI
Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Fortisandbox. 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.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
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.
Executive ViewAI
A critical cross-site scripting vulnerability in Fortinet FortiSandbox (versions 4.0 through 5.0.1) allows unauthenticated attackers to execute arbitrary commands, potentially compromising malware analysis infrastructure and enabling lateral movement into protected networks. Organizations using affected FortiSandbox versions face immediate risk of unauthorized access to sensitive security analysis systems and threat intelligence data.
Implement network-level access controls restricting FortiSandbox management interfaces to authorized administrative networks only; deploy Web Application Firewall (WAF) rules to block XSS payloads targeting the affected versions; disable remote/unauthenticated access to FortiSandbox interfaces; monitor and log all requests to FortiSandbox with alerting for suspicious input patterns; consider air-gapping affected systems or routing through authenticated proxy; no vendor patch currently available—monitor Fortinet security advisories for patch release schedule.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.
Affected Products (CPE)CVE.org
More in Fortisandbox
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Unauthenticated OS command injection in Fortinet FortiSandbox (on-premise, Cloud, and PaaS variants) allows remote attac
Path traversal in Fortinet FortiSandbox 4.4.0-4.4.8 and 5.0.0-5.0.5 enables remote unauthenticated attackers to achieve
OS command injection in Fortinet FortiSandbox allows an authenticated attacker with low-privilege credentials to execute
Unauthenticated remote access control bypass in Fortinet FortiSandbox 4.2.x through 5.0.x - and its Cloud and PaaS varia
Remote code execution in Fortinet FortiSandbox 4.4.x through 5.0.x (on-premises, Cloud, and PaaS deployments) allows una
A client-side enforcement of server-side security vulnerability in Fortinet FortiSandbox 4.4.0 through 4.4.4, FortiSandb
A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet F
A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet F
Multiple instances of heap-based buffer overflow in the command shell of FortiSandbox before 4.0.0 may allow an authenti
An improper neutralization of special elements used in an OS Command vulnerability in FortiSandbox 3.2.0 through 3.2.2,
An improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiS
GitHub PoC
Exploit-DB