CVE-2025-0635
📋 TL;DR
CVE-2025-0635 is a denial-of-service vulnerability in M-Files Server that allows unauthenticated attackers to consume computing resources, potentially making the server unresponsive. This affects organizations running M-Files Server versions before 25.1.14445.5.
💻 Affected Systems
- M-Files Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete service outage where M-Files Server becomes completely unresponsive, disrupting document management and business workflows.
Likely Case
Degraded server performance causing slow response times and intermittent service interruptions.
If Mitigated
Minimal impact with proper network segmentation and rate limiting in place.
🎯 Exploit Status
The vulnerability requires no authentication and appears to be relatively simple to exploit based on the description.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 25.1.14445.5 or later
Vendor Advisory: https://product.m-files.com/security-advisories/cve-2025-0635/
Restart Required: Yes
Instructions:
1. Download M-Files Server version 25.1.14445.5 or later from the M-Files website. 2. Run the installer to upgrade your existing installation. 3. Restart the M-Files Server service.
🔧 Temporary Workarounds
Network Segmentation
allRestrict access to M-Files Server to trusted networks only
Rate Limiting
allImplement rate limiting at the network perimeter to limit resource consumption attempts
🧯 If You Can't Patch
- Implement strict network access controls to limit who can reach the M-Files Server
- Deploy web application firewall (WAF) rules to detect and block potential DoS patterns
🔍 How to Verify
Check if Vulnerable:
Check M-Files Server version in the M-Files Admin application under Server Management > Server InformationCheck Version:
Not applicable - version check is done through M-Files Admin GUIVerify Fix Applied:
Verify the version shows 25.1.14445.5 or higher after patching📡 Detection & Monitoring
Log Indicators:
- Unusual spike in resource consumption
- Multiple connection attempts from single sources
- Server performance degradation alerts
Network Indicators:
- Abnormal traffic patterns to M-Files Server ports
- Multiple rapid connection attempts from external IPs
SIEM Query:
source="m-files-server" AND (event_type="resource_exhaustion" OR cpu_usage>90% OR memory_usage>90%)