CVE-2025-41078
📋 TL;DR
This vulnerability in Viafirma Documents v3.7.129 allows authenticated users without proper privileges to access other users' data, manipulate user accounts, and escalate privileges by impersonating others during document generation and signing. It affects organizations using this specific version of Viafirma's document management software for electronic signatures and document workflows.
💻 Affected Systems
- Viafirma Documents
📦 What is this software?
Documents by Viafirma
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all user accounts, unauthorized document signing with stolen identities, data exfiltration of sensitive documents, and permanent system compromise through privilege escalation.
Likely Case
Unauthorized access to other users' documents and data, creation of fake user accounts, modification of legitimate user permissions, and fraudulent document signing activities.
If Mitigated
Limited impact with proper network segmentation, strong authentication controls, and monitoring, though the vulnerability still exists in the application layer.
🎯 Exploit Status
Exploitation requires authenticated access but minimal technical skill due to authorization bypass in standard features.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after v3.7.129 (check vendor for specific fixed version)
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-viafirma-products
Restart Required: Yes
Instructions:
1. Contact Viafirma support for patched version. 2. Backup current configuration and data. 3. Apply vendor-provided patch or upgrade to fixed version. 4. Restart application services. 5. Verify authorization controls are functioning correctly.
🔧 Temporary Workarounds
Network Segmentation
allRestrict access to Viafirma Documents to only authorized users and networks
Enhanced Monitoring
allImplement strict logging and alerting for user management and document signing activities
🧯 If You Can't Patch
- Implement strict network access controls and isolate the vulnerable system
- Enforce multi-factor authentication and monitor all user activity for suspicious behavior
🔍 How to Verify
Check if Vulnerable:
Check application version via admin interface or configuration files for v3.7.129Check Version:
Check application configuration or contact vendor for version verification methodVerify Fix Applied:
Verify version is updated beyond v3.7.129 and test authorization controls with non-privileged users📡 Detection & Monitoring
Log Indicators:
- Unauthorized user listing attempts
- User creation/modification/deletion by non-admin users
- Document signing by users not associated with those documents
Network Indicators:
- Unusual API calls to user management endpoints
- Multiple document signing requests from single user in short timeframe
SIEM Query:
source="viafirma" AND (event_type="user_management" OR event_type="document_sign") AND user_role!="admin"