CVE-2025-63945
📋 TL;DR
A local privilege escalation vulnerability in Tencent iOA for Windows allows authenticated local users to execute programs with elevated privileges by exploiting a race condition. This affects Windows devices running Tencent iOA versions through 210.9.28693.621001. Attackers need local access and must successfully trigger the race condition to exploit this vulnerability.
💻 Affected Systems
- Tencent iOA
📦 What is this software?
Ioa by Tencent
⚠️ Risk & Real-World Impact
Worst Case
Local attacker gains SYSTEM/administrator privileges, enabling complete system compromise, persistence installation, credential theft, and lateral movement.
Likely Case
Local user with standard privileges escalates to administrator to bypass security controls, install unauthorized software, or access restricted resources.
If Mitigated
With proper access controls and monitoring, exploitation attempts are detected and blocked before successful privilege escalation.
🎯 Exploit Status
Exploitation requires local user access and successful race condition triggering; public proof-of-concept code is available on GitHub.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
Check Tencent security advisories for patch availability; if available, update Tencent iOA to the latest version.
🔧 Temporary Workarounds
Restrict Local User Access
windowsLimit local user accounts and implement least privilege principles to reduce attack surface.
Monitor Process Creation
windowsImplement monitoring for unusual process creation patterns that might indicate exploitation attempts.
🧯 If You Can't Patch
- Implement strict access controls and monitor for suspicious privilege escalation attempts
- Segment networks to limit lateral movement if exploitation occurs
🔍 How to Verify
Check if Vulnerable:
Check Tencent iOA version; if version is 210.9.28693.621001 or earlier, the system is vulnerable.Check Version:
Check Tencent iOA application settings or About section for version information.Verify Fix Applied:
Update Tencent iOA and verify version is newer than 210.9.28693.621001.📡 Detection & Monitoring
Log Indicators:
- Unusual process creation with elevated privileges from standard user accounts
- Multiple rapid file/process operations suggesting race condition exploitation
Network Indicators:
- Not applicable - local exploitation only
SIEM Query:
Process Creation where Parent Process contains 'ioa' AND Integrity Level changes from Medium to High/System