CVE-2025-47733 is a critical Server-Side Request Forgery (SSRF) vulnerability identified in Microsoft Power Apps, a widely used low-code development platform that enables organizations to build custom business applications. SSRF vulnerabilities occur when an attacker can manipulate a server to make unauthorized requests to internal or external resources, potentially bypassing network access controls. In this case, the vulnerability allows an unauthenticated attacker to coerce the Power Apps server into sending crafted requests, which can lead to unauthorized disclosure of sensitive information over the network. The CVSS 3.1 base score of 9.1 reflects the high severity of this flaw, indicating that it can be exploited remotely without any authentication or user interaction, with a low attack complexity. The impact vector includes high confidentiality and integrity impacts, though availability is not affected. While no known exploits have been reported in the wild yet, the critical nature and ease of exploitation make this a significant risk. The vulnerability is categorized under CWE-918, which specifically relates to SSRF issues where the server is tricked into making unintended requests. Given the nature of Power Apps, which often integrates with internal enterprise systems and cloud services, exploitation could allow attackers to access internal endpoints, metadata services, or other sensitive resources that are not directly exposed to the internet. This could lead to data leakage, unauthorized internal reconnaissance, or further pivoting within an organization's network.

For European organizations, the impact of this SSRF vulnerability in Microsoft Power Apps could be substantial. Many enterprises and public sector entities across Europe rely on Power Apps for critical business workflows, data processing, and integration with internal systems. Exploitation could lead to unauthorized disclosure of confidential business information, personal data protected under GDPR, or intellectual property. The breach of confidentiality could result in regulatory penalties, reputational damage, and loss of customer trust. Additionally, attackers could leverage this vulnerability to perform internal network reconnaissance, potentially facilitating subsequent attacks such as lateral movement or privilege escalation. The integrity impact means attackers might manipulate data flows or responses, potentially disrupting business processes or corrupting data. Although availability is not directly affected, the indirect consequences of data compromise and trust erosion could be severe. Given the criticality and ease of exploitation, European organizations using Power Apps must prioritize remediation to avoid compliance violations and operational risks.

To mitigate this vulnerability effectively, European organizations should: 1) Immediately apply any patches or updates released by Microsoft for Power Apps addressing CVE-2025-47733. Since no patch links are currently provided, organizations should monitor Microsoft’s official security advisories and update channels closely. 2) Implement strict network segmentation and firewall rules to limit Power Apps server access to only necessary internal resources, reducing the potential impact of SSRF exploitation. 3) Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious SSRF patterns or anomalous outbound requests originating from Power Apps servers. 4) Conduct thorough security reviews of Power Apps configurations and custom connectors to ensure they do not inadvertently expose internal endpoints or sensitive metadata services. 5) Monitor network traffic and logs for unusual outbound requests from Power Apps infrastructure that could indicate exploitation attempts. 6) Educate development and security teams about SSRF risks and secure coding practices to prevent similar vulnerabilities in custom app components. 7) Consider implementing additional access controls such as IP allowlisting and multi-factor authentication for administrative access to Power Apps environments to reduce the attack surface.