CVE-2025-35033
📋 TL;DR
Medical Informatics Engineering Enterprise Health has a CSV injection vulnerability that allows authenticated attackers to embed malicious macros in downloadable CSV files. This could lead to code execution when victims open these files in spreadsheet applications. Only authenticated users can exploit this vulnerability.
💻 Affected Systems
- Medical Informatics Engineering Enterprise Health
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains remote code execution on victim's workstation when malicious CSV file is opened with macros enabled, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Targeted phishing campaign where authenticated attackers craft malicious CSV files that execute macros on victim workstations, compromising individual systems.
If Mitigated
Limited impact if macro execution is disabled in spreadsheet applications and users are trained not to enable macros from untrusted sources.
🎯 Exploit Status
Requires authenticated access and social engineering to get victims to open CSV files with macros enabled. Exploit depends on victim's spreadsheet application configuration.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions updated on or after 2025-03-14
Vendor Advisory: https://www.cve.org/CVERecord?id=CVE-2025-35033
Restart Required: No
Instructions:
1. Update Enterprise Health to version released on or after 2025-03-14. 2. Apply vendor-provided patches. 3. Verify CSV file generation no longer accepts macro injection.
🔧 Temporary Workarounds
Disable macro execution in spreadsheet applications
allConfigure Microsoft Excel and other spreadsheet software to disable macro execution by default or require explicit user approval.
Restrict CSV download permissions
allLimit which authenticated users can generate and download CSV files from the system.
🧯 If You Can't Patch
- Implement application allowlisting to prevent unauthorized macro execution
- Train users to never enable macros in downloaded CSV files and to open them in text editors first
🔍 How to Verify
Check if Vulnerable:
Check Enterprise Health version date - if before 2025-03-14, system is vulnerable. Test CSV export functionality for macro injection.Check Version:
Check system administration interface for version information or build dateVerify Fix Applied:
After patching, attempt to inject macros into CSV export fields and verify they are properly sanitized in output.📡 Detection & Monitoring
Log Indicators:
- Unusual CSV download patterns from single user accounts
- Multiple CSV downloads in short timeframes
Network Indicators:
- Large CSV file downloads followed by external connections from workstations
SIEM Query:
source="enterprise_health" AND (event="csv_download" OR event="file_export") | stats count by user, src_ip