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Fortisiem CVE-2025-64155

CRITICAL
OS Command Injection (CWE-78)
2026-01-13 psirt@fortinet.com
Fortinet Command Injection Fortisiem
9.8
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 20, 2026 - 16:16 vuln.today
Public exploit code
CVE Published
Jan 13, 2026 - 17:15 nvd
CRITICAL 9.8

DescriptionNVD

An improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4, FortiSIEM 7.1.0 through 7.1.8, FortiSIEM 7.0.0 through 7.0.4, FortiSIEM 6.7.0 through 6.7.10 may allow an attacker to execute unauthorized code or commands via crafted TCP requests.

AnalysisAI

Fortinet FortiSIEM (6.7.0 through 7.4.0) has OS command injection via crafted TCP requests. As a SIEM, compromise gives attackers access to all security logs and the ability to suppress alerts. PoC available.

Technical ContextAI

Crafted TCP requests inject OS commands (CWE-78) into the SIEM. Compromising a SIEM is particularly devastating because the attacker can suppress their own alerts, manipulate log data, and access all collected security telemetry.

RemediationAI

Apply Fortinet patches immediately. A compromised SIEM requires full incident response.

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CVE-2025-64155 vulnerability details – vuln.today
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