CVE-2025-49211
📋 TL;DR
A SQL injection vulnerability in Trend Micro Endpoint Encryption PolicyServer allows authenticated attackers to escalate privileges by injecting malicious SQL queries. This affects organizations using Trend Micro Endpoint Encryption with PolicyServer. Attackers must first have low-privileged access to the target system to exploit this vulnerability.
💻 Affected Systems
- Trend Micro Endpoint Encryption PolicyServer
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with administrative privileges, allowing data exfiltration, ransomware deployment, or complete control of affected systems.
Likely Case
Privilege escalation from low-privileged user to administrator, enabling lateral movement within the network and access to encrypted data.
If Mitigated
Limited impact due to network segmentation, proper access controls, and monitoring preventing successful exploitation.
🎯 Exploit Status
Requires authenticated access with low privileges; SQL injection exploitation requires specific knowledge of the vulnerable component.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched versions
Vendor Advisory: https://success.trendmicro.com/en-US/solution/KA-0019928
Restart Required: Yes
Instructions:
1. Review Trend Micro advisory KA-0019928. 2. Download and apply the latest patch from Trend Micro. 3. Restart the PolicyServer service. 4. Verify the patch is applied successfully.
🔧 Temporary Workarounds
Network Segmentation
allIsolate PolicyServer from non-essential systems to limit lateral movement potential.
Access Control Restrictions
allImplement strict access controls to limit who can interact with the PolicyServer interface.
🧯 If You Can't Patch
- Implement network segmentation to isolate vulnerable systems
- Enhance monitoring for unusual SQL queries or privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check PolicyServer version against Trend Micro's advisory; vulnerable if running affected versions.Check Version:
Check Trend Micro Endpoint Encryption console or PolicyServer interface for version informationVerify Fix Applied:
Verify PolicyServer version matches patched version from Trend Micro advisory and test functionality.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL query patterns in PolicyServer logs
- Unexpected privilege escalation events
- Multiple failed authentication attempts followed by successful access
Network Indicators:
- Unusual traffic to/from PolicyServer ports
- SQL injection patterns in network traffic
SIEM Query:
Example: 'source="trend_micro_policyserver" AND (sql_injection_indicators OR privilege_escalation)'