CVE-2026-28760: RATOC RAID Monitoring Manager RCE Flaw

CVE-2026-28760 Overview

CVE-2026-28760 is a DLL Search Order Hijacking vulnerability affecting the installer of RATOC RAID Monitoring Manager for Windows. The installer improperly searches the current working directory to load certain DLLs during execution. If an attacker can convince a user to place a malicious DLL in the same directory as the installer, arbitrary code may be executed with administrator privileges when the installer runs.

Critical Impact

Successful exploitation allows arbitrary code execution with administrator privileges through a crafted DLL placed alongside the installer.

Affected Products

• RATOC RAID Monitoring Manager for Windows (Installer)

Discovery Timeline

• 2026-03-26 - CVE-2026-28760 published to NVD
• 2026-03-26 - Last updated in NVD database

Technical Details for CVE-2026-28760

Vulnerability Analysis

This vulnerability is classified as CWE-427 (Uncontrolled Search Path Element), a common class of DLL hijacking vulnerabilities in Windows applications. The RATOC RAID Monitoring Manager installer attempts to load certain DLLs without specifying an absolute path, causing Windows to search through its standard DLL search order. Since the current working directory is included in this search path, an attacker can plant a malicious DLL with an expected name in the same directory as the installer.

When a user executes the installer, typically with elevated privileges to perform system-level installation tasks, the malicious DLL is loaded instead of the legitimate system library. This grants the attacker's code execution with the same administrator privileges that the installer possesses.

Root Cause

The root cause of this vulnerability lies in the installer's failure to use absolute paths when loading DLLs. Windows DLL search order prioritizes certain directories, and when applications do not explicitly specify the full path to required libraries, they become susceptible to DLL hijacking attacks. The installer should either specify absolute paths to system DLLs or implement safe DLL loading practices such as using SetDllDirectory("") to remove the current directory from the search path.

Attack Vector

The attack vector is local and requires user interaction. An attacker must:

1. Identify which DLLs the installer attempts to load from the current directory
2. Craft a malicious DLL with the same name as the expected library
3. Social engineer the victim into downloading or extracting the installer to a directory containing the malicious DLL
4. Wait for the victim to execute the installer with administrative privileges

Common attack scenarios include distributing the malicious DLL bundled with the installer in an archive downloaded from untrusted sources, or placing the DLL in common download directories where users may execute the installer.

The vulnerability exploits the Windows DLL search order mechanism. When the installer calls LoadLibrary() or similar functions without specifying an absolute path, Windows searches directories in a predefined order, including the current working directory. By placing a DLL with a matching name in that directory, the attacker's code is loaded and executed within the context of the installer process.

Detection Methods for CVE-2026-28760

Indicators of Compromise

• Unexpected DLL files present in the same directory as the RATOC RAID Monitoring Manager installer
• Process creation events showing the installer loading DLLs from non-standard locations (not System32 or SysWOW64)
• Suspicious network connections or child processes spawned by the installer executable

Detection Strategies

• Monitor file system activity for DLL files created in user-writable directories containing the installer
• Implement application whitelisting to prevent unauthorized DLLs from being loaded
• Use endpoint detection tools to identify DLL side-loading patterns during installation processes

Monitoring Recommendations

• Enable Windows Sysmon or equivalent logging to capture DLL load events (Event ID 7) for installer processes
• Review security logs for elevation requests associated with the RATOC installer from unusual directory paths
• Configure alerts for the creation of DLL files in download directories or temporary folders

How to Mitigate CVE-2026-28760

Immediate Actions Required

• Download the RATOC RAID Monitoring Manager installer only from the official Ratoc Systems website
• Verify the digital signature of the installer before execution
• Run the installer from a clean, dedicated directory that contains only the installer executable
• Clear or inspect the Downloads folder before running any installers

Patch Information

Ratoc Systems has released updated software to address this vulnerability. Users should visit the Ratoc Systems User Info Update page to obtain the latest version of the RAID Monitoring Manager installer that includes the security fix. Additional technical details are available in the JVN Vulnerability Advisory.

Workarounds

• Move the installer to an empty, newly created directory before execution to ensure no malicious DLLs are present
• Use Process Monitor to audit which DLLs the installer attempts to load and verify their legitimacy
• Run the installer in a sandboxed environment or virtual machine to limit potential impact
• Implement Software Restriction Policies or AppLocker to prevent DLL execution from user-writable directories

# Create a clean installation directory and run the installer from there
mkdir C:\SafeInstall
copy "C:\Users\%USERNAME%\Downloads\RATOCInstaller.exe" C:\SafeInstall\
cd C:\SafeInstall
RATOCInstaller.exe