Vulnerability · Published Jan 13, 2026 · Assigned by fortinet
CVE-2025-64155
Critical 9.4
In plain English
A critical-severity OS command injection in FortiSIEM from Fortinet. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 43.9% (higher than 99% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official 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.
Affected products (as reported)
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C