CVE-2025-47733
📋 TL;DR
This Server-Side Request Forgery (SSRF) vulnerability in Microsoft Power Apps allows attackers to make unauthorized requests from the server to internal or external systems, potentially exposing sensitive data. Organizations using affected Power Apps configurations are vulnerable to information disclosure attacks.
💻 Affected Systems
- Microsoft Power Apps
📦 What is this software?
Power Apps by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access internal systems, cloud metadata services, or sensitive data stores, leading to full network compromise and data exfiltration.
Likely Case
Information disclosure from internal services, cloud metadata endpoints, or adjacent systems accessible from the Power Apps server.
If Mitigated
Limited impact with proper network segmentation and input validation controls in place.
🎯 Exploit Status
SSRF vulnerabilities typically have low exploitation complexity when attackers can control URL parameters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Microsoft Security Update Guide for specific patch versions
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47733
Restart Required: Yes
Instructions:
1. Apply latest Microsoft Power Apps updates via Microsoft Update
2. Restart affected Power Apps services
3. Validate functionality after patching
🔧 Temporary Workarounds
Input Validation and URL Whitelisting
allImplement strict input validation and whitelist allowed URLs for server-side requests
Network Segmentation
allRestrict Power Apps server network access to only required internal services
🧯 If You Can't Patch
- Implement strict input validation for all URL parameters in Power Apps
- Deploy network controls to restrict outbound connections from Power Apps servers
🔍 How to Verify
Check if Vulnerable:
Review Power Apps configuration for URL processing functions and test with controlled SSRF payloadsCheck Version:
Check Power Apps version in Microsoft 365 admin center or PowerShell: Get-PowerAppVerify Fix Applied:
Verify Power Apps version is updated and test SSRF attempts are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from Power Apps servers
- Requests to internal IP ranges or metadata endpoints
Network Indicators:
- Power Apps servers making unexpected external requests
- Requests to cloud metadata services (169.254.169.254)
SIEM Query:
source="PowerApps" AND (dest_ip=169.254.169.254 OR dest_ip IN [RFC1918 ranges])