CVE-2025-64155
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Fortinet Fortisiem
PublishedJan 13, 2026
First seenJan 13, 2026
Weakness typeCWE-78OS command injection
How to fix
Update
- fortinet fortisiem7.1.9, 7.2.7, 7.3.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| fortinet fortisiem | 6.7.0 ≤ v < 7.1.9, 7.2.0 ≤ v < 7.2.7, 7.3.0 ≤ v < 7.3.5, 7.4.0 | 7.1.9, 7.2.7, 7.3.5 |
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