CVE-2025-47733: Critical SSRF Vulnerability in Microsoft Power Apps

Overview

CVE-2025-47733 is a critical Server-Side Request Forgery (SSRF) vulnerability identified in Microsoft Power Apps. This flaw allows unauthorized remote attackers to exploit improperly handled server-side requests, potentially disclosing sensitive internal information across the network.

What is SSRF?

Server-Side Request Forgery (SSRF) vulnerabilities occur when an attacker can manipulate a server to make unauthorized requests to internal or external services on their behalf. This is especially dangerous in cloud-based and internal environments where attackers can access resources that are not exposed to the public internet.

In this case, Microsoft Power Apps is vulnerable to SSRF due to insufficient input validation, allowing attackers to craft URLs that the server processes, potentially leaking internal data.

Technical Details

This vulnerability is categorized as CWE-918: Server-Side Request Forgery (SSRF). The flaw allows:

• Remote attackers with no prior access to craft requests that the server will forward to internal services
• Unauthorized disclosure of sensitive information
• No user interaction or credentials required

CVSS Severity

According to the Common Vulnerability Scoring System (CVSS) v3.1, the vulnerability has a base score of 9.1 (Critical):

• Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
• Confidentiality Impact: High
• Integrity Impact: High

This score reflects the ease of exploitation and the potential severity of unauthorized data access and manipulation.

SSVC Assessment

The CISA Stakeholder-Specific Vulnerability Categorization (SSVC) analysis outlines:

• No known exploitation as of publication
• Vulnerability is automatable
• Technical impact is considered total

These factors highlight the urgency of addressing the issue before exploitation tools emerge.

Mitigation Guidance

Microsoft has released guidance and updates for mitigating this vulnerability. Recommended steps include:

• Apply patches or updates provided by Microsoft through the MSRC advisory
• Review and harden any inputs that lead to server-side network calls
• Monitor internal service access for anomalies

References

• Microsoft CVE-2025-47733 Security Advisory

Organizations using Microsoft Power Apps should prioritize patching and review network configurations to prevent unauthorized internal access. SSRF vulnerabilities are particularly dangerous in cloud and microservice environments where internal trust boundaries are critical.