Rule Document 1:66987

Rule Category

SERVER-OTHER -- Snort has detected traffic exploiting vulnerabilities in a server in the network.

Alert Message

SERVER-OTHER Fortinet FortiSIEM phMonitor argument injection attempt

Rule Explanation

This rule looks for argument injection metacharacters inside the XML element "cluster_url" in requests sent to Fortinet FortiSIEM servers.

What To Look For

This rule fires on attempts to exploit an argument injection vulnerability in the Fortinet FortiSIEM phMonitor service.

Known Usage

Public information/Proof of Concept available

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

Rule Categories::Server::Other

MITRE::ATT&CK Framework::Enterprise::Initial Access::Exploit Public-Facing Application

Adversaries may attempt to take advantage of a weakness in an Internet-facing computer or program using software, data, or commands in order to cause unintended or unanticipated behavior. The weakness in the system can be a bug, a glitch, or a design vulnerability. These applications are often websites, but can include databases (like SQL), standard services (like SMB or SSH), network device administration and management protocols (like SNMP and Smart Install), and any other applications with Internet accessible open sockets, such as web servers and related services.

Vulnerability::Severity::Critical

Vulnerability::Severity::High

CVE

CVE-2025-64155

Additional Links

www.fortiguard.com/psirt/FG-IR-25-772

Rule Vulnerability

N/A

Not Applicable

CVE Additional Information

This product uses data from the NVD API but is not endorsed or certified by the NVD.

CVE-2025-64155

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