CVE-2025-26369
📋 TL;DR
A missing authorization vulnerability in Q-Free MaxTime allows authenticated low-privileged users to escalate privileges by adding permissions to user groups via crafted HTTP requests. This affects all installations running version 2.11.0 or earlier. Attackers can gain administrative access without proper authorization checks.
💻 Affected Systems
- Q-Free MaxTime
📦 What is this software?
Maxtime by Q Free
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise where attackers gain administrative privileges, modify all configurations, access sensitive data, and potentially disrupt traffic management operations.
Likely Case
Privilege escalation leading to unauthorized access to administrative functions, configuration changes, and potential data exfiltration.
If Mitigated
Limited impact with proper network segmentation, strong authentication, and monitoring detecting privilege escalation attempts.
🎯 Exploit Status
Requires authenticated access but low privileges. Exploitation involves crafting HTTP requests to the vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: > 2.11.0
Vendor Advisory: https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-26369
Restart Required: No
Instructions:
1. Contact Q-Free for updated version >2.11.0. 2. Backup configuration. 3. Apply patch/upgrade. 4. Verify authorization checks are enforced.
🔧 Temporary Workarounds
Network Access Control
allRestrict access to MaxTime web interface to authorized users only using firewall rules.
Temporary Authorization Override
allImplement additional authorization layer or WAF rules to block unauthorized user group modification requests.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate MaxTime from untrusted networks
- Enforce principle of least privilege for all user accounts and monitor for privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check MaxTime version via admin interface or configuration files. If version ≤2.11.0, system is vulnerable.Check Version:
Check web interface or configuration files for version information specific to MaxTime installation.Verify Fix Applied:
After upgrade, test with low-privileged account attempting to modify user group permissions - should be denied.📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to /user-groups endpoints from low-privileged users
- Unusual user privilege changes in audit logs
- Failed authorization attempts followed by successful privilege modifications
Network Indicators:
- HTTP traffic to user group management endpoints from unauthorized IPs or users
- Unusual pattern of privilege modification requests
SIEM Query:
source="maxtime" AND (url_path="/user-groups" OR action="privilege_modify") AND user_role="low_privilege"