FortiSIEM Fiasco: Critical Vulnerability Leaves Systems Exposed!
Fortinet warns of a critical FortiSIEM vulnerability, CVE-2025-25256, with a CVSS score of 9.8, now actively exploited in the wild. This OS command injection flaw allows attackers to run arbitrary code via crafted CLI requests. Time to update FortiSIEM faster than you can say “security breach”!

Hot Take:
Well, folks, it looks like FortiSIEM has caught a bug and not the kind you’d want in your operating system! With CVE-2025-25256 making the rounds, Fortinet’s got their work cut out for them—because who doesn’t love a little OS command injection vulnerability to spice things up? Time to patch up and block those CLI requests before your network turns into a hacker’s playground!
Key Points:
- Fortinet has identified a critical vulnerability in FortiSIEM, tracked as CVE-2025-25256.
- The vulnerability carries a high CVSS score of 9.8 and is actively exploited in the wild.
- It allows for OS command injection, enabling unauthenticated attackers to execute arbitrary code.
- Affected versions range from FortiSIEM 6.1 to 7.3.1, with fixes available in subsequent updates.
- FortiSIEM 7.4 is immune to the flaw, and Fortinet suggests limiting access to the phMonitor port as a workaround.
Already a member? Log in here