CVE-2025-26859: RemoteView PC Application RCE Vulnerability

CVE-2025-26859 Overview

CVE-2025-26859 is an uncontrolled search path element vulnerability [CWE-427] affecting RemoteView PC Application Console versions prior to 6.0.2. The flaw allows an attacker to place a crafted Dynamic Link Library (DLL) in the same folder as the affected application. When the application loads, it can load the attacker-controlled DLL and execute arbitrary code in the context of the user running the software.

Critical Impact
A local attacker can achieve arbitrary code execution by planting a malicious DLL alongside the RemoteView PC Application Console executable, leading to full compromise of confidentiality, integrity, and availability on the host.

Affected Products

RemoteView PC Application Console versions prior to 6.0.2
Windows installations of the RemoteView client software
Endpoints where the RemoteView PC Application Console service has been deployed

Discovery Timeline

2025-10-15 - CVE-2025-26859 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-26859

Vulnerability Analysis

The vulnerability stems from how the RemoteView PC Application Console resolves and loads DLL dependencies at runtime. The application searches for required libraries using an uncontrolled search path, including the current working directory. An attacker who can write a file into the application's folder can supply a malicious DLL with a name matching a library the application expects to load.

When a victim launches the application, the Windows loader resolves the dependency to the attacker-supplied DLL. The library executes inside the process and inherits the user's privileges. The vulnerability requires user interaction, as the victim must launch the affected program. The attack vector is local, since the attacker needs prior file write access to the directory containing the executable.

Successful exploitation results in arbitrary code execution. Attackers commonly use this class of flaw for persistence, lateral movement, or privilege escalation when the affected binary runs in a higher-privileged context.

Root Cause

The root cause is improper control of the DLL search path, classified under [CWE-427] Uncontrolled Search Path Element. The application does not pin library loading to a trusted, absolute path. It also does not call hardening APIs such as SetDefaultDllDirectories or use LOAD_LIBRARY_SEARCH_SYSTEM32 flags to constrain the loader.

Attack Vector

An attacker first obtains write access to the directory containing the RemoteView PC Application Console executable. The attacker drops a crafted DLL using a filename that matches a library the application loads at startup. When the user launches the application, the Windows loader resolves the dependency against the local directory before searching system paths, and the malicious code executes within the trusted process.

The vulnerability is described in prose only. No verified proof-of-concept exploit code is available. Refer to the JVN #22713803 Security Advisory for additional technical context.

Detection Methods for CVE-2025-26859

Indicators of Compromise

Presence of unexpected DLL files inside the RemoteView PC Application Console installation directory or working directory
DLLs in the application folder that are not digitally signed by the legitimate RemoteView publisher
Child processes spawned by the RemoteView console executable that deviate from baseline behavior
Outbound network connections from the RemoteView process to unknown command-and-control infrastructure

Detection Strategies

Monitor file creation events in the RemoteView installation folder using endpoint telemetry, focusing on *.dll writes by non-installer processes
Hunt for image-load events where the RemoteView console process loads DLLs from non-standard or user-writable paths
Correlate process creation events that show RemoteView spawning unusual children such as cmd.exe, powershell.exe, or rundll32.exe

Monitoring Recommendations

Enable Sysmon Event ID 7 (Image Loaded) and alert on unsigned DLLs loaded by the RemoteView executable
Track filesystem ACL changes on application directories to detect attempts to drop payloads
Review authentication and remote access logs for anomalous activity preceding suspected DLL plant attempts

How to Mitigate CVE-2025-26859

Immediate Actions Required

Identify all endpoints running RemoteView PC Application Console versions prior to 6.0.2 and prioritize them for remediation
Note that the vendor has issued a service termination notice. Review the RemoteView Service Termination Notice and plan to uninstall affected versions
Restrict write permissions on the application directory so that only administrators can place files inside it
Audit existing installation folders for unauthorized DLL files and remove or quarantine any unknown libraries

Patch Information

The vendor advisory indicates that the RemoteView PC Application Console service is being terminated. Organizations should remove affected installations rather than relying on continued patching. For details, see the RemoteView Service Termination Notice and the JVN #22713803 Security Advisory. Versions 6.0.2 and later address the uncontrolled search path issue where still available.

Workarounds

Uninstall the RemoteView PC Application Console from all endpoints if a supported version cannot be deployed
Apply strict directory access control lists so only privileged accounts can write to the install path
Use application allowlisting to block execution of unsigned or unknown DLLs from user-writable locations
Restrict interactive logon and remote file share access to endpoints hosting the affected software

bash

# Configuration example: restrict write access to the RemoteView install directory on Windows
icacls "C:\Program Files\RemoteView" /inheritance:r
icacls "C:\Program Files\RemoteView" /grant:r "Administrators:(OI)(CI)F" "SYSTEM:(OI)(CI)F" "Users:(OI)(CI)RX"