CVE-2025-64155

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, F

Severity
Critical 9.4
CVSS 3.1
Exploited
Not listed
EPSS
0.454
98.7th percentile
Discovered by
Third party
Vendor advisory field
Published
Jan 13, 2026
Assigned by fortinet

Description

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.

Weakness: CWE-78

Affected products

Vendor Product Category Matched by
Fortinet FortiSIEM SIEM & Log Management cna-assigner
Vendor-reported products (1)
  • Fortinet · FortiSIEM

Credit

Fortinet is pleased to thank security researchers Zach Hanley (@hacks_zach) of Horizon3.ai for discovering and reporting this vulnerability under responsible disclosure.

Vendor remediation

Upgrade to FortiSIEM version 7.5.0 or above Upgrade to FortiSIEM version 7.4.1 or above Upgrade to FortiSIEM version 7.3.5 or above Upgrade to FortiSIEM version 7.2.7 or above Upgrade to FortiSIEM version 7.1.9 or above

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