CVE-2025-62776: WTW EAGLE DLL Search Path RCE Vulnerability

CVE-2025-62776 Overview

CVE-2025-62776 affects the installer of WTW EAGLE (for Windows) version 3.0.8.0. The installer contains an insecure Dynamic Link Library (DLL) search path vulnerability classified as [CWE-427]. Attackers can plant a malicious DLL in a location searched by the installer before the legitimate library. When a user executes the installer, the malicious DLL loads and arbitrary code runs with the privileges of the installer process.

Critical Impact
Local attackers can achieve arbitrary code execution by tricking users into running the WTW EAGLE installer from a directory containing a malicious DLL.

Affected Products

WTW EAGLE (for Windows) installer version 3.0.8.0
Windows endpoints where the vulnerable installer is executed
Systems where users download installers to writable directories such as Downloads

Discovery Timeline

2025-10-29 - CVE-2025-62776 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-62776

Vulnerability Analysis

The WTW EAGLE installer for Windows resolves DLL dependencies using an insecure search order. Windows applications that do not explicitly specify absolute paths for libraries fall back to the standard DLL search sequence. This sequence includes the directory from which the application loaded, which is typically the same directory containing the installer executable. An attacker who places a malicious DLL with a name matching one the installer expects to load achieves code execution when the installer runs.

The issue falls under [CWE-427] Uncontrolled Search Path Element. Exploitation requires local file system access to stage the malicious DLL and user interaction to execute the installer. Successful exploitation yields full code execution in the security context of the user running the installer, which often includes administrative privileges during software installation.

Root Cause

The installer does not enforce a fully qualified path when loading specific DLLs. It also does not call hardening APIs such as SetDefaultDllDirectories or LoadLibraryEx with LOAD_LIBRARY_SEARCH_SYSTEM32. The result is that the current working directory or the installer's own directory becomes a viable load location for attacker-supplied libraries.

Attack Vector

The attack vector is local and requires user interaction. A typical scenario begins with an attacker delivering a malicious DLL to the victim through a phishing email, drive-by download, or shared archive. The attacker stages the DLL in the same directory as a legitimately downloaded WTW EAGLE installer. When the user runs the installer, Windows resolves the malicious DLL before the intended system library. The attacker's code then executes with installer privileges.

No verified exploit code is publicly available. The vulnerability mechanism is described in the JVN Security Advisory and referenced in WTW Support Documentation.

Detection Methods for CVE-2025-62776

Indicators of Compromise

Unexpected DLL files in user download directories alongside installer executables
Installer processes loading DLLs from non-standard paths such as C:\Users\<user>\Downloads\
Child processes spawned from the WTW EAGLE installer that do not match expected installation activity
DLLs without valid Authenticode signatures loaded by the installer process

Detection Strategies

Monitor process image loads where the loading process is a known installer and the loaded module path resides in user-writable directories
Alert on installer executables spawning interpreters such as cmd.exe, powershell.exe, or rundll32.exe
Correlate file write events that drop DLLs into download directories with subsequent installer execution from the same path

Monitoring Recommendations

Enable Windows Sysmon Event ID 7 to capture module loads and identify untrusted DLLs loaded by installer processes
Forward endpoint telemetry to a centralized analytics platform for path-based and signature-based anomaly detection
Track behavioral indicators of DLL hijacking across endpoint, identity, and network telemetry rather than relying on file hashes alone

How to Mitigate CVE-2025-62776

Immediate Actions Required

Stop running the WTW EAGLE installer version 3.0.8.0 from directories that contain untrusted files
Move the installer to a clean, dedicated directory before execution
Verify the Authenticode signature of the installer before launching it
Restrict write access to common download directories for non-administrative users where feasible

Patch Information

Consult the WTW Support Documentation for vendor-provided updates and the JVN Security Advisory for coordinated disclosure details. Apply any updated installer version that addresses the insecure DLL search path before deploying WTW EAGLE in production environments.

Workarounds

Execute the installer from an empty directory that contains no other files
Block execution of installers from Downloads and temporary directories through application control policies such as Windows Defender Application Control or AppLocker
Educate users to scan and isolate installers before execution and to verify the absence of accompanying DLL files

bash

# AppLocker policy example to block executables in user Downloads
# Run in an elevated PowerShell prompt on Windows endpoints
New-AppLockerPolicy -RuleType Path -User Everyone `
  -Action Deny `
  -PathCondition "%OSDRIVE%\Users\*\Downloads\*" `
  -RuleNamePrefix "Block-Downloads-EXE" |
  Set-AppLockerPolicy -Merge