CVE-2025-13348: ASUS Business Manager Privilege Escalation

CVE-2025-13348 Overview

An improper access control vulnerability exists in the ASUS Secure Delete Driver component of ASUS Business Manager. This vulnerability can be triggered by a local user sending a specially crafted request, potentially leading to the creation of arbitrary files in a specified path. The flaw is classified under CWE-862 (Missing Authorization), indicating that the driver fails to properly validate user permissions before performing sensitive file operations.

Critical Impact

Local attackers with low privileges can exploit this vulnerability to create arbitrary files on the system, potentially leading to privilege escalation, system compromise, or denial of service conditions.

Affected Products

• ASUS Business Manager (Secure Delete Driver component)
• ASUS systems running vulnerable versions of the Secure Delete Driver
• Enterprise environments utilizing ASUS Business Manager for system administration

Discovery Timeline

• 2026-02-02 - CVE-2025-13348 published to NVD
• 2026-02-03 - Last updated in NVD database

Technical Details for CVE-2025-13348

Vulnerability Analysis

This vulnerability stems from a Missing Authorization weakness (CWE-862) in the ASUS Secure Delete Driver. The driver fails to implement proper access control checks when processing user requests, allowing local users to bypass security restrictions. When exploited, attackers can create arbitrary files at specified filesystem paths without proper authorization validation.

The vulnerability requires local access to the system, meaning the attacker must already have some level of access to the target machine. However, the low privilege requirement makes this vulnerability particularly concerning in multi-user environments or systems where lower-privileged accounts exist.

Root Cause

The root cause of this vulnerability is the absence of proper authorization checks within the ASUS Secure Delete Driver. When processing file operation requests, the driver does not adequately verify whether the requesting user has sufficient permissions to perform the requested action. This Missing Authorization flaw allows any local user to craft malicious requests that the driver will process without validating the user's privilege level.

Device drivers operating at kernel level have elevated system access, making authorization bypass vulnerabilities particularly severe. The driver's failure to implement proper access control boundaries allows unprivileged users to perform operations that should be restricted to administrators or the system itself.

Attack Vector

The attack vector is local, requiring the attacker to have existing access to the target system. The exploitation process involves:

1. A local user with low-level privileges identifies the vulnerable ASUS Secure Delete Driver
2. The attacker crafts a specially formatted request targeting the driver's file operation functionality
3. The malicious request bypasses authorization checks due to the Missing Authorization vulnerability
4. The driver processes the request and creates an arbitrary file at the attacker-specified path
5. The attacker can leverage the created file for privilege escalation or further system compromise

The ability to create arbitrary files at specified paths can be weaponized in multiple ways, including placing malicious executables in startup directories, overwriting critical system files, or creating symbolic links that redirect sensitive operations.

Detection Methods for CVE-2025-13348

Indicators of Compromise

• Unexpected file creation events in system directories or protected paths
• Unusual IOCTL requests to the ASUS Secure Delete Driver from non-administrative processes
• Suspicious driver interaction patterns from low-privileged user accounts
• Anomalous file system activity originating from SecureDelete driver operations

Detection Strategies

• Monitor Windows Event Logs for file creation events in sensitive directories by non-privileged users
• Implement driver monitoring to detect unusual IOCTL communication patterns with ASUS drivers
• Deploy endpoint detection rules that flag unauthorized file operations in protected system paths
• Use application whitelisting to restrict which processes can interact with the ASUS Secure Delete Driver

Monitoring Recommendations

• Enable detailed file system auditing on critical directories and system paths
• Configure SentinelOne or similar EDR solutions to alert on suspicious driver interaction patterns
• Establish baseline behavior for ASUS Business Manager components and alert on deviations
• Monitor for privilege escalation attempts that may follow arbitrary file creation

How to Mitigate CVE-2025-13348

Immediate Actions Required

• Review the ASUS Security Advisory for the latest security updates regarding ASUS Business Manager
• Audit systems to identify all instances of ASUS Business Manager and the Secure Delete Driver
• Restrict local user accounts to only those strictly necessary for business operations
• Consider temporarily disabling the Secure Delete Driver if not critical to operations until a patch is applied

Patch Information

ASUS has acknowledged this vulnerability and users should refer to the "Security Update for ASUS Business Manager" section on the ASUS Security Advisory page for detailed patching information and updated driver versions. Organizations should prioritize applying the security update to all affected systems.

Workarounds

• Limit local user access on systems running ASUS Business Manager to trusted administrators only
• Implement strict file system access controls and monitoring on critical directories
• Consider using application control policies to restrict which applications can communicate with the vulnerable driver
• Deploy endpoint protection solutions to detect and block exploitation attempts targeting this vulnerability

# Example: Audit file system access on Windows (PowerShell)
# Enable auditing for Object Access - File System
auditpol /set /subcategory:"File System" /success:enable /failure:enable

# Review ASUS driver status
Get-WmiObject Win32_SystemDriver | Where-Object {$_.Name -like "*ASUS*" -or $_.Name -like "*SecureDelete*"} | Select-Object Name, State, Status