Overview
The CVE-2025-29967 is a critical vulnerability in the Remote Desktop Gateway Service which, if exploited, allows for remote code execution. This vulnerability poses a significant risk to all systems running the affected versions of the Remote Desktop Gateway Service, enabling an unauthorized attacker over a network to potentially compromise these systems or leak sensitive data.
The severity and widespread use of the Remote Desktop Gateway Service, coupled with the potential for system compromise, necessitate immediate attention to this vulnerability. Addressing this issue promptly will prevent potential system breaches, data theft, and the subsequent reputational and financial damages.
Vulnerability Summary
CVE ID: CVE-2025-29967
Severity: Critical (8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise, data leakage
Affected Products
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Product | Affected Versions
Remote Desktop Gateway Service | All versions prior to the patch
How the Exploit Works
The vulnerability exists due to a heap-based buffer overflow issue in the Remote Desktop Gateway Service. An attacker can send specially crafted packets to the Remote Desktop Gateway Service over the network, causing the service to overflow its buffer. This overflow can lead to arbitrary code execution in the context of the current user, permitting the attacker to take control of the affected system or access sensitive information.
Conceptual Example Code
The following is a conceptual example of how the vulnerability might be exploited. In this case, the attacker sends a malicious payload to the target system:
POST /rdp-gateway/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/xrdp
{ "buffer_overflow_payload": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA..." }The payload of ‘A’s is larger than the buffer can handle, causing it to overflow, and enabling the attacker to execute arbitrary code.
Please note that this is a simplified, conceptual example and real-world exploits would be more complex and specific to the targeted system’s environment.
Mitigation
Users of the affected products are advised to apply the patch provided by the vendor immediately. If for some reason the patch cannot be applied promptly, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation against potential attacks. However, please note that these are only temporary solutions and the patch should be applied as soon as possible to fully address the vulnerability.