CVE-2025-31283
📋 TL;DR
A broken access control vulnerability in Trend Vision One User Roles allowed administrators to create users who could then change their own role assignments, potentially leading to privilege escalation. This affected Trend Vision One deployments where administrators had user creation privileges. The vulnerability has been patched on Trend Vision One's backend service.
💻 Affected Systems
- Trend Vision One
📦 What is this software?
Trend Vision One by Trendmicro
⚠️ Risk & Real-World Impact
Worst Case
An attacker with administrator access could create a user account, then modify that account's role to gain higher privileges, potentially compromising the entire Trend Vision One environment.
Likely Case
An administrator could unintentionally or maliciously create elevated privilege accounts, leading to unauthorized access to sensitive security data and controls.
If Mitigated
With proper role-based access controls and monitoring, the impact would be limited to authorized administrative actions with full audit trails.
🎯 Exploit Status
Exploitation requires authenticated administrator access. The vulnerability involves manipulating user role assignments through the administrative interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Backend service fix applied (no specific version provided)
Vendor Advisory: https://success.trendmicro.com/en-US/solution/KA-0019386
Restart Required: No
Instructions:
1. Access Trend Vision One portal
2. No action required - vulnerability has been patched on Trend's backend service
3. Verify your instance is updated by checking the advisory link
🔧 Temporary Workarounds
Restrict User Creation Permissions
allLimit user creation capabilities to only essential administrators
Implement Role Change Monitoring
allMonitor and alert on user role modification events
🧯 If You Can't Patch
- Implement strict least-privilege access controls for all administrator accounts
- Enable comprehensive audit logging for all user creation and role modification events
🔍 How to Verify
Check if Vulnerable:
Check if your Trend Vision One instance has received the backend service update by reviewing the vendor advisoryCheck Version:
Contact Trend Micro support for specific version verificationVerify Fix Applied:
Verify with Trend Micro support that your instance is on the patched backend service version📡 Detection & Monitoring
Log Indicators:
- Unusual user creation events followed by role modifications
- Administrator accounts creating users with elevated privileges
Network Indicators:
- API calls to user creation endpoints followed by role modification endpoints
SIEM Query:
source="trend-vision-one" AND (event_type="user_created" OR event_type="role_modified") | stats count by user, target_user