CVE-2025-31285
📋 TL;DR
A broken access control vulnerability in Trend Vision One allowed administrators to create users who could then modify account roles and escalate privileges. This affected Trend Vision One deployments with administrator access. The vulnerability has been fixed on the backend service.
💻 Affected Systems
- Trend Vision One
📦 What is this software?
Trend Vision One by Trendmicro
⚠️ Risk & Real-World Impact
Worst Case
Administrator creates user accounts that can escalate to higher privileges, potentially gaining full system control and bypassing security controls.
Likely Case
Administrator creates limited user accounts that gain unauthorized administrative access, compromising system integrity and data confidentiality.
If Mitigated
With proper access controls and monitoring, unauthorized privilege escalation attempts would be detected and prevented before causing damage.
🎯 Exploit Status
Requires authenticated administrator access; exploitation is straightforward once admin access is obtained
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Backend service fix (no specific version provided)
Vendor Advisory: https://success.trendmicro.com/en-US/solution/KA-0019386
Restart Required: No
Instructions:
1. Ensure Trend Vision One is connected to Trend Micro services. 2. The fix has been applied automatically on the backend service. 3. No customer action required as the vulnerability has been addressed.
🔧 Temporary Workarounds
Restrict Administrator Access
allLimit administrator accounts to trusted personnel only and implement least privilege principles
Monitor User Creation and Role Changes
allImplement logging and alerting for user creation and role modification events
🧯 If You Can't Patch
- Implement strict access controls and monitor all administrator activities
- Regularly audit user accounts and role assignments for unauthorized changes
🔍 How to Verify
Check if Vulnerable:
Check if your Trend Vision One instance is connected to Trend Micro services and receiving updatesCheck Version:
Check Trend Vision One console for service status and connectivityVerify Fix Applied:
The vulnerability has been fixed on the backend service; ensure your instance is properly connected📡 Detection & Monitoring
Log Indicators:
- Unusual user creation events
- Role modification events from non-standard accounts
- Multiple privilege escalation attempts
Network Indicators:
- Unusual authentication patterns from administrator accounts
SIEM Query:
source="trend-vision-one" AND (event_type="user_creation" OR event_type="role_modification")