CVE-2025-15038: ASUS Driver Information Disclosure Flaw

CVE-2025-15038 Overview

An Out-of-Bounds Read vulnerability exists in the ASUS Business System Control Interface driver. This vulnerability can be triggered by an unprivileged local user sending a specially crafted IOCTL request, potentially leading to a disclosure of kernel information or a system crash. The vulnerability is classified under CWE-125 (Out-of-Bounds Read), indicating improper memory access that reads data outside the intended buffer boundaries.

Critical Impact

Unprivileged local attackers can exploit this driver vulnerability to leak sensitive kernel memory or cause system instability through denial of service conditions.

Affected Products

• ASUS Business System Control Interface Driver (specific versions to be confirmed via ASUS Security Advisory)
• Systems with ASUS Business System Control Interface installed

Discovery Timeline

• 2026-03-12 - CVE-2025-15038 published to NVD
• 2026-03-12 - Last updated in NVD database

Technical Details for CVE-2025-15038

Vulnerability Analysis

This Out-of-Bounds Read vulnerability resides in the ASUS Business System Control Interface driver, a kernel-mode component that provides system management capabilities for ASUS business-class devices. The flaw occurs when the driver processes IOCTL (Input/Output Control) requests from user-space applications without properly validating the boundaries of memory read operations.

The vulnerability's local attack vector requires an attacker to have existing access to the target system, but notably does not require elevated privileges. An unprivileged local user can craft malicious IOCTL requests that cause the driver to read beyond the boundaries of allocated buffers, resulting in either kernel memory information disclosure or system crashes due to invalid memory access.

Root Cause

The root cause of this vulnerability stems from inadequate bounds checking within the IOCTL handler functions of the ASUS Business System Control Interface driver. When processing specially crafted IOCTL requests, the driver fails to properly validate the size or offset parameters, allowing read operations to access memory outside the intended buffer boundaries. This type of vulnerability typically occurs when:

• Input parameters from user-space are not properly validated before being used in memory operations
• Buffer size calculations do not account for edge cases or malicious input
• The driver assumes trusted input from IOCTL requests without verification

Attack Vector

The attack vector for CVE-2025-15038 is local, requiring the attacker to execute code on the target system. The exploitation process involves:

1. An attacker with local, unprivileged access identifies the vulnerable ASUS Business System Control Interface driver
2. The attacker crafts a malicious IOCTL request with parameters designed to trigger an out-of-bounds read
3. The request is sent to the driver through standard Windows device I/O interfaces
4. The driver processes the request without proper bounds validation
5. The driver reads beyond the allocated buffer, either returning sensitive kernel memory to the attacker or accessing invalid memory and causing a system crash (Blue Screen of Death)

The vulnerability can be exploited for information disclosure, potentially revealing sensitive kernel data such as memory addresses useful for bypassing ASLR (Address Space Layout Randomization), or leveraged to cause denial of service conditions through system crashes. For technical implementation details, refer to the ASUS Security Advisory.

Detection Methods for CVE-2025-15038

Indicators of Compromise

• Unexpected system crashes (BSOD) with driver-related stop codes
• Unusual IOCTL calls to ASUS Business System Control Interface driver from non-standard processes
• Anomalous kernel memory access patterns logged by endpoint detection solutions
• Processes attempting to interact with ASUS driver device objects without legitimate business need

Detection Strategies

• Monitor for unusual IOCTL traffic to ASUS driver components using kernel-level monitoring tools
• Implement driver integrity verification to detect tampering or exploitation attempts
• Deploy endpoint detection and response (EDR) solutions capable of monitoring kernel-mode driver interactions
• Configure Windows Event Tracing for driver-related security events

Monitoring Recommendations

• Enable enhanced logging for driver load events and IOCTL operations
• Monitor for repeated system crashes or stability issues that may indicate exploitation attempts
• Implement behavioral analysis to detect anomalous driver access patterns from user-mode processes
• Review system event logs for driver-related errors or warnings associated with the ASUS Business System Control Interface

How to Mitigate CVE-2025-15038

Immediate Actions Required

• Review the ASUS Security Advisory for the latest security updates and patched driver versions
• Inventory all systems with ASUS Business System Control Interface driver installed
• Restrict local access to systems where the vulnerable driver is present until patching is complete
• Consider temporarily disabling the ASUS Business System Control Interface driver on critical systems if functionality permits

Patch Information

ASUS has released a security update addressing this vulnerability. System administrators should refer to the "Security Update for ASUS Business System Control Interface" section on the ASUS Security Advisory for detailed patch information and download links. Ensure that driver updates are obtained only from official ASUS sources to prevent supply chain compromise.

Workarounds

• Restrict local user access on systems running the vulnerable driver to trusted personnel only
• Implement application whitelisting to prevent unauthorized processes from interacting with the driver
• Consider disabling the ASUS Business System Control Interface driver if the functionality is not required
• Deploy endpoint protection solutions with kernel-level monitoring capabilities to detect exploitation attempts