CVE-2025-2501: Lenovo PC Manager Privilege Escalation Flaw

CVE-2025-2501 Overview

CVE-2025-2501 is an untrusted search path vulnerability in Lenovo PC Manager. A local attacker with low privileges can leverage the flaw to elevate privileges on affected Windows systems. The weakness is tracked as [CWE-426: Untrusted Search Path]. Lenovo published a security advisory acknowledging the issue and providing updated builds.

The vulnerability allows a local, authenticated user to place a malicious binary or library in a location searched by the vulnerable process. When PC Manager loads the attacker-controlled file, code executes in the security context of the higher-privileged process. Successful exploitation yields full compromise of confidentiality, integrity, and availability on the affected host.

Critical Impact
A local user can escalate to SYSTEM-level privileges through a search path hijack in Lenovo PC Manager, gaining full control of the endpoint.

Affected Products

Lenovo PC Manager (all versions prior to the fixed build referenced in the Lenovo advisory)
Windows endpoints with Lenovo PC Manager installed
OEM Lenovo PCs shipping PC Manager as preinstalled software

Discovery Timeline

2025-05-30 - CVE-2025-2501 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-2501

Vulnerability Analysis

CVE-2025-2501 stems from Lenovo PC Manager resolving external resources through an untrusted search path. When a privileged component loads a DLL, executable, or configuration file, it consults directories that a low-privileged user can write to before falling back to trusted system locations. The classification [CWE-426] describes exactly this class of insecure resource resolution.

A local attacker exploits the flaw by planting a crafted payload in a directory that appears earlier in the search order than the legitimate file. When PC Manager or one of its services next loads the resource, Windows resolves the attacker's copy first. The malicious code then runs with the privileges of the loading process, which is typically SYSTEM for endpoint management agents.

Because PC Manager is deployed by default on many Lenovo consumer and commercial devices, the attack surface is broad. The vulnerability requires local access but does not require user interaction beyond the initial payload placement.

Root Cause

The root cause is improper control of the search path used to locate a required resource. The vulnerable process fails to specify absolute paths, fails to restrict library loading to secure directories, or inherits a PATH that includes user-writable locations. This violates the principle of loading only trusted binaries from trusted directories.

Attack Vector

The attack vector is local. An attacker who already has standard user access to a Lenovo endpoint drops a malicious DLL or executable into a directory searched by PC Manager. Triggering the vulnerable code path — through normal PC Manager operation, a scheduled task, or a service restart — causes the planted file to load with elevated privileges.

The vulnerability mechanism is described in prose because no verified public proof-of-concept is available. See the Lenovo Security Advisory for vendor-supplied technical details.

Detection Methods for CVE-2025-2501

Indicators of Compromise

Unexpected DLL or executable files in directories referenced by Lenovo PC Manager processes, particularly user-writable paths that appear in the process working directory or PATH.
Lenovo PC Manager child processes spawning unusual binaries such as cmd.exe, powershell.exe, or rundll32.exe with atypical command lines.
File creation events in PC Manager install or working directories originating from non-administrative user contexts.

Detection Strategies

Monitor image load events (Sysmon Event ID 7) for Lenovo PC Manager processes loading modules from non-standard or user-writable directories.
Alert on process creation (Event ID 4688 or Sysmon Event ID 1) where a PC Manager service running as SYSTEM launches a child process signed by an untrusted publisher.
Baseline the legitimate module set loaded by PC Manager and flag any deviation, especially DLLs missing valid Lenovo or Microsoft signatures.

Monitoring Recommendations

Enable command-line auditing and PowerShell script block logging on all Lenovo endpoints to capture post-exploitation activity.
Forward endpoint telemetry to a centralized SIEM and retain image-load and file-write events for at least 90 days.
Track integrity level transitions where a medium-integrity user session precedes a SYSTEM-level PC Manager process executing new code.

How to Mitigate CVE-2025-2501

Immediate Actions Required

Update Lenovo PC Manager to the fixed version specified in the Lenovo Security Advisory on every affected endpoint.
Inventory all Lenovo devices in the environment and confirm PC Manager version through software asset management tooling.
Restrict local administrative access and enforce least privilege to reduce the pool of users who can stage payloads.

Patch Information

Lenovo has released an updated build of PC Manager that addresses the untrusted search path issue. Administrators should deploy the vendor patch through standard update channels or by pushing the installer via management tooling. Refer to the Lenovo Security Advisory for the specific fixed version and download links.

Workarounds

If patching is delayed, uninstall Lenovo PC Manager on systems where the utility is not required for business operations.
Remove write permissions for standard users on any directory referenced by PC Manager processes, including its install directory and any per-user working directories.
Apply application control policies (Windows Defender Application Control or AppLocker) to block execution of unsigned binaries from user-writable locations.

bash

# Example AppLocker rule concept - block unsigned binaries from user-writable paths
# Deny execution of DLLs and EXEs under %LOCALAPPDATA% and %TEMP% for non-administrators
# Configure via Group Policy: Computer Configuration > Windows Settings >
#   Security Settings > Application Control Policies > AppLocker