CVE-2025-64155 Command injection in FortiSIEM
Attackers can execute unauthorized code via crafted TCP requests in Fortinet FortiSIEM, requiring immediate patching.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-64155?
CVE-2025-64155 is a critical command injection vulnerability in Fortinet FortiSIEM, published on 13 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-78
Which versions are affected by CVE-2025-64155?
It affects 1 product.
Products include Fortinet Fortisiem.
How do I fix CVE-2025-64155?
No fix has been published for CVE-2025-64155 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2025-64155 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-64155 exists.
Public exploit code: 4 proofs of concept on GitHub.
Other vulnerabilities in Fortinet FortiSIEM
Sources
Also known as GHSA-gvhh-fvm4-vqqj.