CVE-2025-8421
📋 TL;DR
An improper default permission vulnerability in Lenovo Dock Manager allows authenticated local users to redirect log files with elevated privileges during installation. This could enable privilege escalation or data manipulation. Affects users of Lenovo systems with vulnerable Dock Manager installations.
💻 Affected Systems
- Lenovo Dock Manager
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Local authenticated attacker gains SYSTEM/root privileges, installs persistent malware, or manipulates system files.
Likely Case
Local user redirects logs to controlled locations, potentially enabling information disclosure or limited privilege escalation.
If Mitigated
Attack requires local authenticated access and specific installation conditions, limiting impact with proper access controls.
🎯 Exploit Status
Exploitation requires local authenticated access and specific timing during installation. No public exploits known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.0.0 and later
Vendor Advisory: https://support.lenovo.com/us/en/product_security/LEN-198729
Restart Required: Yes
Instructions:
1. Download Lenovo Dock Manager version 2.0.0.0 or later from Lenovo support site. 2. Uninstall previous version. 3. Install updated version. 4. Restart system.
🔧 Temporary Workarounds
Remove vulnerable software
windowsUninstall Lenovo Dock Manager if not required
Control Panel > Programs > Uninstall Lenovo Dock Manager
Restrict local user permissions
windowsLimit standard user permissions to reduce attack surface
🧯 If You Can't Patch
- Restrict physical and remote access to affected systems
- Implement application whitelisting to prevent unauthorized software execution
🔍 How to Verify
Check if Vulnerable:
Check Lenovo Dock Manager version in Control Panel > Programs or run: wmic product where name='Lenovo Dock Manager' get versionCheck Version:
wmic product where name='Lenovo Dock Manager' get versionVerify Fix Applied:
Verify installed version is 2.0.0.0 or higher using same method📡 Detection & Monitoring
Log Indicators:
- Unusual file operations in system directories during Dock Manager installation
- Permission changes to log directories
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
EventID=4688 AND ProcessName LIKE '%DockManager%' AND CommandLine LIKE '%log%' AND TargetFilename NOT LIKE '%expected_log_path%'