Rule Document 1:65229

Rule Category

SERVER-WEBAPP -- Snort has detected traffic exploiting vulnerabilities in web based applications on servers.

Alert Message

SERVER-WEBAPP MCP-Remote command injection attempt

Rule Explanation

This rule searches for server responses with authorization endpoint attributes containing attempts to execute arbitrary commands on the MCP-Remote client.

What To Look For

This rule looks for attempts to exploit a command injection vulnerability in MCP-Remote clients like Claude Desktop, Cursor, etc.

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::External Remote Services

Adversaries may leverage external-facing remote services to initially access and/or persist within a network. Remote services such as VPNs, Citrix, and other access mechanisms allow users to connect to internal enterprise network resources from external locations. There are often remote service gateways that manage connections and credential authentication for these services.

Vulnerability::Severity::Critical

Vulnerability::Severity::High

CVE

CVE-2025-6514

Additional Links

github.com/geelen/mcp-remote/commit/607b226a356cb61a239ffaba2fb3db1c9dea4bac

Rule Vulnerability

Command Injection

Command Injection attacks target applications that allow unsafe user-supplied input. Attackers transmit this input via forms, cookies, HTTP headers, etc. and exploit the applications permissions to execute system commands without injecting code.

CVE Additional Information

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

CVE-2025-6514

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