Fortisiem
CVE-2025-64155
CRITICAL
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization OS command sanitization, avoid shell exec
MITRE ATT&CK
2 techniques across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS 9.8 (Critical). No auth, network vector, low complexity. PoC available. EPSS 0.05%. SIEM compromise is a security team's worst nightmare – the monitoring system itself is weaponized. |
| Exploit ScenarioDerived | An attacker exploits command injection in FortiSIEM to gain shell access, then suppresses all security alerts related to their activity while using the SIEM's visibility into the network to plan further attacks. |
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Alert meAnalysisAIv1 – Mar 12, 2026
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.
Earlier versions of this analysis (1)
FortiSIEM allows unauthenticated OS command injection, threatening the security monitoring infrastructure itself.
RemediationAI
Apply Fortinet patches immediately. A compromised SIEM requires full incident response.
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
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.
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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:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
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.
Executive ViewAI
CVE-2025-64155 presents critical security risk, a OS command injection vulnerability rated CVSS 9.8. Successful exploitation could allow attackers to execute arbitrary code or commands on affected systems, potentially leading to full system compromise. Proof-of-concept code is publicly available, increasing the risk of exploitation. Organizations should apply vendor updates immediately when available and implement compensating controls in the interim.
Apply vendor patch. If immediate patching is not feasible: (1) Deploy WAF rules to block injection patterns; (2) Restrict network access to affected components; (3) Enable enhanced logging for suspicious activity.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
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
OS command injection occurs when an application passes unsanitized user input directly into system shell commands.
Affected Products (CPE)CVE.org
A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet a
An improper neutralization of special elements used in an OS command ('OS Command Injection') vulnerability [CWE-78] in
An improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet
A relative path traversal in Fortinet FortiSIEM versions 7.0.0, 6.7.0 through 6.7.2, 6.6.0 through 6.6.3, 6.5.1, 6.5.0 a
Path traversal in Fortinet FortiSIEM 7.5.0 can let a remote unauthenticated attacker execute unauthorized code or comman
An improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet
A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiSIEM versi
A plaintext storage of a password vulnerability [CWE-256] in FortiSIEM 6.7 all versions, 6.6 all versions, 6.5 all versi
A improper authentication vulnerability in Fortinet FortiSIEM before 6.5.0 allows a local attacker with CLI access to pe
A improper privilege management in Fortinet FortiSIEM Windows Agent version 4.1.4 and below allows attacker to execute p
An exposure of sensitive information to an unauthorized actor [CWE-200] in FortiSIEM version 7.0.0 and before 6.7.5 may
A unprotected storage of credentials in Fortinet FortiSIEM Windows Agent version 4.1.4 and below allows an authenticated
Exploit-DB