OS Command Injection Vulnerability in Fortinet FortiSandbox
CVE-2026-25089

9.1CRITICAL

Key Information:

Vendor

Fortinet

Vendor
CVE Published:
9 June 2026

Badges

πŸ’° RansomwareπŸ‘Ύ Exploit Exists🟑 Public PoC🟣 EPSS 23%πŸ“° News Worthy

What is CVE-2026-25089?

A vulnerability in Fortinet FortiSandbox could allow an unauthenticated attacker to execute unauthorized commands on affected systems. Attackers may exploit this flaw by sending specially crafted HTTP requests, leading to potential system compromises and unauthorized command execution. The security of devices running FortiSandbox from versions 4.2 through 5.0.5 is at risk, necessitating immediate attention to apply security measures.

Affected Version(s)

FortiSandbox 5.0.0 <= 5.0.5

FortiSandbox 4.4.0 <= 4.4.8

FortiSandbox 4.2.1 <= 4.2.8

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

News Articles

Three critical Fortinet sandbox bugs splattered by unknown attackers

All have patches, so make sure you upgrade to a fixed version

2 weeks ago

Three critical Fortinet sandbox bugs splattered by unknown attackers

All have patches, so make sure you upgrade to a fixed version

2 weeks ago

Attackers are exploiting FortiSandbox vulnerabilities - Help Net Security

Attackers have been spotted exploiting three vulnerabilities (CVE-2026-39813, CVE-2026-39808, CVE-2026-25089) in FortiSandbox.

2 weeks ago

References

EPSS Score

23% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • πŸ’°

    Used in Ransomware

  • πŸ“°

    First article discovered by BleepingComputer

  • 🟑

    Public PoC available

  • πŸ‘Ύ

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.