CVE-2025-13155
📋 TL;DR
An improper permissions vulnerability in Lenovo Baiying Client allows local authenticated users to execute arbitrary code with elevated privileges. This affects users running vulnerable versions of the software on their systems. Attackers could gain SYSTEM-level access through this local privilege escalation flaw.
💻 Affected Systems
- Lenovo Baiying Client
⚠️ 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 attacker gains full SYSTEM privileges, enabling complete system compromise, data theft, persistence mechanisms, and lateral movement capabilities.
Likely Case
Malicious insider or compromised user account escalates privileges to install malware, steal credentials, or bypass security controls.
If Mitigated
Limited impact due to strict access controls, least privilege principles, and prompt patching preventing successful exploitation.
🎯 Exploit Status
Exploitation requires local authenticated access but appears straightforward based on the CWE-276 (Incorrect Default Permissions) classification.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in reference; check Lenovo advisory for latest patched version
Vendor Advisory: https://iknow.lenovo.com.cn/detail/435005
Restart Required: Yes
Instructions:
1. Visit the Lenovo advisory URL. 2. Download the latest version of Lenovo Baiying Client. 3. Install the update following vendor instructions. 4. Restart the system to ensure changes take effect.
🔧 Temporary Workarounds
Remove or Disable Baiying Client
windowsUninstall or disable the vulnerable Baiying Client software if not required for operations
Control Panel > Programs > Uninstall a program > Select Lenovo Baiying Client > Uninstall
Restrict Local Access
allImplement strict access controls to limit who can log into affected systems
🧯 If You Can't Patch
- Implement strict least privilege principles - ensure users only have necessary permissions
- Monitor for privilege escalation attempts using endpoint detection and response (EDR) tools
🔍 How to Verify
Check if Vulnerable:
Check installed version of Lenovo Baiying Client against patched version in Lenovo advisoryCheck Version:
wmic product where name="Lenovo Baiying Client" get versionVerify Fix Applied:
Verify Baiying Client version matches or exceeds patched version from Lenovo advisory📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- Suspicious process creation with SYSTEM privileges
- Modifications to Baiying Client files or permissions
Network Indicators:
- Not applicable - local exploitation only
SIEM Query:
EventID=4688 AND NewProcessName contains "*" AND SubjectUserName != SYSTEM AND TokenElevationType != %%1936