CVE-2025-26376
📋 TL;DR
This vulnerability allows authenticated low-privileged attackers to modify user data in Q-Free MaxTime systems via crafted HTTP requests. It affects all installations running version 2.11.0 or earlier. Organizations using vulnerable versions are at risk of unauthorized data manipulation.
💻 Affected Systems
- Q-Free MaxTime
📦 What is this software?
Maxtime by Q Free
⚠️ Risk & Real-World Impact
Worst Case
Attackers could escalate privileges, modify critical user data, or disrupt system operations by altering administrative accounts.
Likely Case
Low-privileged users modifying other user profiles, potentially gaining unauthorized access to sensitive information or altering system settings.
If Mitigated
Limited impact with proper network segmentation and strict access controls preventing low-privileged users from reaching vulnerable endpoints.
🎯 Exploit Status
Exploitation requires authenticated access but minimal technical skill due to simple HTTP request manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: > 2.11.0
Vendor Advisory: https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-26376
Restart Required: Yes
Instructions:
1. Contact Q-Free for updated version >2.11.0. 2. Backup configuration and data. 3. Apply patch following vendor instructions. 4. Restart MaxTime services. 5. Verify functionality.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict access to MaxTime web interface to authorized users only using firewall rules.
Authentication Hardening
allImplement multi-factor authentication and strict session management to reduce risk of unauthorized access.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate MaxTime systems from untrusted networks.
- Deploy web application firewall (WAF) with rules to detect and block suspicious user modification requests.
🔍 How to Verify
Check if Vulnerable:
Check MaxTime version via web interface or configuration files. If version ≤2.11.0, system is vulnerable.Check Version:
Check web interface admin panel or configuration files for version information.Verify Fix Applied:
Verify version is >2.11.0 and test user modification functionality with low-privileged accounts.📡 Detection & Monitoring
Log Indicators:
- Unusual user modification requests from low-privileged accounts
- Multiple failed authorization attempts followed by successful user data changes
Network Indicators:
- HTTP POST/PUT requests to /maxprofile/users/ endpoints from unauthorized IPs
- Abnormal request patterns to user management APIs
SIEM Query:
source="maxtime" AND (uri_path="/maxprofile/users/" AND http_method IN ("POST", "PUT")) AND user_role="low_privilege"