A critical remote code execution vulnerability, identified as CVE-2025-11202, has been discovered in a component named win-cli-mcp-server, which is part of multiple unknown products. This flaw allows a remote, unauthenticated attacker to inject and execute arbitrary commands on a vulnerable system, potentially leading to a complete system compromise. Organizations are urged to identify affected assets and apply patches immediately to mitigate the risk of data theft, malware infection, and operational disruption.

This is a command injection vulnerability within the resolveCommandPath function of the win-cli-mcp-server component. An attacker can send specially crafted data to this function, which fails to properly sanitize the input. The malicious input is then passed directly to a system shell and executed with the privileges of the server process, resulting in remote code execution (RCE).

This is a critical severity vulnerability with a CVSS score of 9.8. Successful exploitation by a remote attacker could lead to a complete compromise of the affected server's confidentiality, integrity, and availability. The business impact includes the potential for significant data breaches, theft of sensitive corporate or customer information, deployment of ransomware, and using the compromised system as a pivot point for further attacks within the internal network. The lack of clarity on which specific products are affected increases the risk, as organizations may have difficulty identifying their exposure without thorough investigation.

Immediate Action:

• Identify all assets running the vulnerable win-cli-mcp-server component.
• Apply the latest security updates provided by the respective product vendors to patch this vulnerability.
• If patching is not immediately possible, implement compensating controls and restrict access to the vulnerable service.

Proactive Monitoring:

• Review server and application logs for unusual or malformed requests targeting the resolveCommandPath function.
• Monitor for unexpected processes being spawned by the win-cli-mcp-server process.
• Analyze network traffic for suspicious outbound connections from affected servers, which could indicate a successful compromise.

Compensating Controls:

• If patching cannot be immediately deployed, restrict network access to the vulnerable component to only trusted hosts and networks.
• Deploy an Intrusion Prevention System (IPS) or Web Application Firewall (WAF) with rules designed to detect and block command injection attack patterns.
• Ensure the service is running with the lowest possible user privileges to limit the impact of a potential compromise.

Public Exploit Available: false

Due to the critical severity (CVSS 9.8) of this remote code execution vulnerability, immediate action is required. Organizations must prioritize identifying all systems running the vulnerable win-cli-mcp-server component and apply the necessary updates provided by the respective vendors. Although this vulnerability is not currently on the CISA KEV list, its high severity rating makes it a prime candidate for future inclusion. Proactive patching is the most effective defense to prevent a potential system compromise.