CVE-2026-2998: eAI Technologies ERP DLL Hijacking Flaw

CVE-2026-2998 Overview

CVE-2026-2998 is a DLL Hijacking vulnerability [CWE-426] affecting the Enterprise Resource Planning (ERP) software developed by eAI Technologies. An authenticated local attacker can place a crafted Dynamic Link Library (DLL) file in the same directory as the program. The application loads the malicious DLL instead of the intended library, resulting in arbitrary code execution under the privileges of the ERP process.

TW-CERT published the advisory describing the issue. The flaw requires local access and valid authentication on the host running the ERP application.

Critical Impact
Authenticated local attackers can execute arbitrary code by dropping a crafted DLL into the ERP installation directory, compromising confidentiality, integrity, and availability of the host.

Affected Products

eAI Technologies ERP (vendor advisory does not enumerate specific version ranges)
Windows hosts running the affected ERP application
Systems where standard users have write access to the ERP installation or working directory

Discovery Timeline

2026-02-23 - CVE-2026-2998 published to the National Vulnerability Database (NVD)
2026-04-15 - Last updated in NVD database

Technical Details for CVE-2026-2998

Vulnerability Analysis

The ERP application is susceptible to DLL Hijacking, classified as Untrusted Search Path [CWE-426]. When the program starts, it resolves dependent libraries using the Windows DLL search order. If the application does not specify fully qualified paths or fails to validate the DLL's origin, the loader retrieves the first match found in the search sequence, which typically begins with the directory containing the executable.

An attacker with local authenticated access who can write to that directory replaces or adds a DLL with a name expected by the executable. When a legitimate user or service launches the ERP application, the loader maps the attacker-controlled DLL into the process. Code in DllMain runs immediately, granting the attacker arbitrary code execution in the security context of the launching user.

Root Cause

The root cause is insecure library loading. The application does not pin DLL paths, does not validate digital signatures of dependencies, and likely runs from a directory where non-administrative users hold write permissions. This combination allows planted DLLs to take precedence over legitimate system libraries.

Attack Vector

Exploitation requires local access and prior authentication on the target host. The attacker writes a crafted DLL into the application directory using a filename the ERP binary loads at runtime. The next execution of the ERP program triggers the malicious payload. No user interaction beyond launching the application is required, and the attack is repeatable across reboots if the planted DLL persists.

No public exploit code or proof-of-concept has been published at the time of writing. See the TW-CERT Security Report for vendor details.

Detection Methods for CVE-2026-2998

Indicators of Compromise

Unsigned or unexpectedly signed DLL files present in the eAI ERP installation directory
Recently created DLLs with filenames matching common Windows libraries inside application working directories
ERP process loading modules from non-standard paths outside C:\Windows\System32
Child processes spawned by the ERP executable that perform reconnaissance or persistence actions

Detection Strategies

Monitor module load events (Sysmon Event ID 7) for the ERP executable and alert on DLLs loaded from user-writable directories
Compare hashes of DLLs in the ERP install path against a known-good baseline from a clean installation
Audit file creation events (Sysmon Event ID 11) targeting the ERP directory, especially .dll writes by non-installer processes
Hunt for ERP processes loading DLLs that lack a valid Authenticode signature

Monitoring Recommendations

Enable PowerShell and process command-line logging on hosts running the ERP application
Forward Sysmon and Windows Security logs to a centralized SIEM for correlation
Track logons preceding suspicious file writes to the ERP directory to identify the responsible account

How to Mitigate CVE-2026-2998

Immediate Actions Required

Restrict NTFS permissions on the ERP installation directory so only administrators and the service account can write files
Inventory all DLLs in the ERP directory and remove any unsigned or unrecognized libraries
Limit interactive logon rights on systems hosting the ERP application to reduce the local attacker surface
Apply vendor patches or updated builds once eAI Technologies publishes them through the TW-CERT Security Bulletin

Patch Information

Refer to the TW-CERT Security Report for the official advisory and vendor remediation guidance. Contact eAI Technologies directly for fixed build availability and version-specific upgrade instructions.

Workarounds

Move the ERP executable to a protected directory under C:\Program Files\ where standard users lack write permissions
Enforce application allowlisting using Windows Defender Application Control or AppLocker to block unsigned DLL loads
Set the CWDIllegalInDllSearch registry value to remove the current working directory from the DLL search path
Run the ERP application under a dedicated low-privilege service account isolated from interactive users

bash

# Configuration example - Harden DLL search path via registry
reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager" /v CWDIllegalInDllSearch /t REG_DWORD /d 0xFFFFFFFF /f

# Restrict write access on the ERP installation directory
icacls "C:\Program Files\eAI\ERP" /inheritance:r
icacls "C:\Program Files\eAI\ERP" /grant:r "Administrators:(OI)(CI)F" "SYSTEM:(OI)(CI)F" "Users:(OI)(CI)RX"