CVE-2025-52837: Trend Micro Password Manager Escalation

CVE-2025-52837 Overview

CVE-2025-52837 is a link following privilege escalation vulnerability in Trend Micro Password Manager (Consumer) for Windows. Versions 5.8.0.1327 and below are affected. An authenticated local attacker can abuse symbolic links and similar filesystem redirection techniques to delete arbitrary files or folders on the host. The resulting arbitrary delete primitive can be leveraged to escalate privileges to SYSTEM on Windows endpoints. The issue is tracked under [CWE-59] Improper Link Resolution Before File Access and [CWE-64] Windows Shortcut Following.

Critical Impact
Local low-privileged users can delete arbitrary files or folders and escalate privileges to SYSTEM on affected Windows endpoints.

Affected Products

Trend Micro Password Manager (Consumer) for Windows, version 5.8.0.1327 and below
Trend Micro Password Manager consumer editions distributed via retail and OEM channels
Any Windows installations bundling the vulnerable Password Manager component

Discovery Timeline

2025-07-10 - CVE-2025-52837 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-52837

Vulnerability Analysis

The vulnerability resides in a privileged file or folder operation performed by Trend Micro Password Manager. A component running with elevated rights accesses a file path that a low-privileged user can influence. The service does not verify whether the target path is a symbolic link, junction, or hard link before performing a delete operation.

Attackers exploit this by planting a filesystem link that redirects the privileged process to a target of the attacker's choosing. When the service performs its delete, it follows the link and removes the attacker-selected object. This arbitrary file delete primitive is a well-established path to SYSTEM privilege escalation on modern Windows through techniques such as MSI rollback abuse.

Root Cause

The root cause is improper link resolution before file access ([CWE-59]) combined with Windows shortcut following ([CWE-64]). The Password Manager service operates on user-writable directories without validating the reparse point status of target objects or impersonating the caller. Trusting user-controlled paths from a SYSTEM context breaks the security boundary between the local user and the service.

Attack Vector

Exploitation requires local access and low-privileged authenticated execution on the target host. The attacker stages the vulnerable directory, replaces or creates a filesystem link (NTFS junction, symbolic link, or object-manager symlink) pointing to a protected file, and triggers the privileged operation. See the Zero Day Initiative Advisory ZDI-25-586 for advisory-level technical detail.

No verified public proof-of-concept code is available for CVE-2025-52837. Refer to the Trend Micro Security Advisory for vendor-supplied remediation guidance.

Detection Methods for CVE-2025-52837

Indicators of Compromise

Creation of NTFS junctions, symbolic links, or reparse points inside directories written to by Trend Micro Password Manager processes
Unexpected deletion of files under C:\Windows, C:\Program Files, or other protected paths correlated with Password Manager service activity
Use of tools such as mklink, CreateSymbolicLink, or SetReparsePoint invocations from non-administrative user sessions preceding service actions

Detection Strategies

Monitor process and file telemetry for Password Manager service binaries performing delete operations on paths outside their expected working directories
Alert on reparse point creation in user-writable directories immediately followed by privileged service file operations
Correlate Sysmon Event ID 11 (FileCreate) and Event ID 23 (FileDelete) with the Password Manager service account context

Monitoring Recommendations

Enable Windows object access auditing on Password Manager installation and working directories
Track version inventory of Trend Micro Password Manager across managed Windows endpoints and flag hosts running 5.8.0.1327 or earlier
Review scheduled tasks and services associated with Password Manager for unexpected restarts that could indicate exploitation attempts

How to Mitigate CVE-2025-52837

Immediate Actions Required

Update Trend Micro Password Manager (Consumer) to the fixed version identified in the Trend Micro Security Advisory TMKA-12946
Inventory all consumer Windows endpoints running Password Manager and prioritize hosts where multiple local users share the device
Restrict local logon on affected endpoints to trusted users until patching is complete

Patch Information

Trend Micro has published remediation guidance in the Trend Micro Security Advisory TMKA-12946. Apply the vendor-supplied update to any installation of Password Manager (Consumer) at version 5.8.0.1327 or earlier. Additional advisory context is available in the Zero Day Initiative Advisory ZDI-25-586.

Workarounds

Remove Trend Micro Password Manager from shared or multi-user Windows systems where the patch cannot be applied immediately
Limit interactive logon rights so only administrators can access hosts running the vulnerable version
Monitor the Password Manager installation directory and service working paths for reparse point creation and block non-administrative writes where feasible

bash

# Query installed Trend Micro Password Manager version on Windows
Get-ItemProperty "HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*", \
                "HKLM:\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*" |
  Where-Object { $_.DisplayName -like "*Password Manager*" } |
  Select-Object DisplayName, DisplayVersion, Publisher