CVE-2025-8485
📋 TL;DR
A local privilege escalation vulnerability in Lenovo App Store allows authenticated local users to execute arbitrary code with elevated privileges during application installation. This affects systems running vulnerable versions of Lenovo App Store where local users have standard access. Attackers could gain administrative control over affected systems.
💻 Affected Systems
- Lenovo App Store
📦 What is this software?
App Store by Lenovo
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise where an authenticated attacker gains SYSTEM/root privileges, installs persistent malware, accesses sensitive data, and disables security controls.
Likely Case
Local user elevates privileges to install unauthorized software, modify system configurations, or access other user data on the same system.
If Mitigated
Limited impact with proper user access controls, application allowlisting, and regular patching in place.
🎯 Exploit Status
Exploitation requires local authenticated access. The vulnerability involves improper permissions during installation operations.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Lenovo advisory for specific patched version
Vendor Advisory: https://iknow.lenovo.com.cn/detail/434329
Restart Required: Yes
Instructions:
1. Visit the Lenovo advisory URL. 2. Identify affected version and download patch. 3. Apply the patch following Lenovo's instructions. 4. Restart the system as required.
🔧 Temporary Workarounds
Restrict Local User Privileges
windowsLimit standard user permissions to reduce attack surface
Disable Lenovo App Store
windowsTemporarily disable or remove Lenovo App Store if not required
🧯 If You Can't Patch
- Implement strict least privilege access controls for all users
- Monitor for unusual privilege escalation attempts and installation activities
🔍 How to Verify
Check if Vulnerable:
Check Lenovo App Store version against advisory. Review system logs for unauthorized installation attempts.Check Version:
Check Lenovo App Store 'About' section or Windows Programs and FeaturesVerify Fix Applied:
Verify Lenovo App Store has been updated to patched version. Test installation functionality.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- Unauthorized application installations
- Lenovo App Store installation process with elevated privileges
Network Indicators:
- Unusual outbound connections following local privilege escalation
SIEM Query:
EventID=4688 AND ProcessName LIKE '%LenovoAppStore%' AND IntegrityLevel='High'