CVE-2026-25785: Lanscope Endpoint Manager Path Traversal

CVE-2026-25785 Overview

A critical path traversal vulnerability has been identified in Lanscope Endpoint Manager (On-Premises) Sub-Manager Server. This vulnerability exists in versions 9.4.7.3 and earlier, allowing unauthenticated attackers to exploit improper input validation to traverse directories outside the intended file paths. Successful exploitation enables attackers to tamper with arbitrary files and achieve remote code execution on the affected system.

Critical Impact

This vulnerability allows unauthenticated remote attackers to tamper with arbitrary files and execute arbitrary code on systems running vulnerable versions of Lanscope Endpoint Manager Sub-Manager Server.

Affected Products

• Lanscope Endpoint Manager (On-Premises) Sub-Manager Server Ver.9.4.7.3 and earlier

Discovery Timeline

• 2026-02-25 - CVE-2026-25785 published to NVD
• 2026-02-25 - Last updated in NVD database

Technical Details for CVE-2026-25785

Vulnerability Analysis

This path traversal vulnerability (CWE-22) affects the Lanscope Endpoint Manager Sub-Manager Server, an endpoint management solution used for device monitoring and administration in enterprise environments. The vulnerability stems from inadequate input sanitization when processing file path parameters within the application.

The network-accessible attack vector with no authentication requirements makes this vulnerability particularly dangerous in enterprise deployments where the Sub-Manager Server may be exposed on internal networks. Attackers can leverage directory traversal sequences (such as ../) to escape the intended directory structure and access or modify files anywhere on the target system with the privileges of the application process.

The ability to tamper with arbitrary files combined with code execution capabilities presents a severe threat to organizational security, potentially enabling attackers to deploy malware, establish persistence, steal sensitive data, or pivot to other systems within the network.

Root Cause

The root cause of CVE-2026-25785 is improper neutralization of special elements used in a pathname (CWE-22). The Lanscope Endpoint Manager Sub-Manager Server fails to adequately validate and sanitize user-supplied file path input, allowing directory traversal sequences to be processed without proper filtering. This enables attackers to reference files and directories outside the application's intended root directory.

Attack Vector

This vulnerability is exploitable remotely over the network without requiring authentication or user interaction. An attacker can craft malicious requests containing path traversal sequences to:

1. Navigate outside the application's designated directory structure
2. Access, read, or modify sensitive system files
3. Overwrite critical application or system configuration files
4. Upload malicious executables or scripts to achieve arbitrary code execution

The exploitation path requires network access to the Sub-Manager Server. Once exploited, the attacker gains the ability to execute code with the same privileges as the server process, potentially leading to full system compromise.

Detection Methods for CVE-2026-25785

Indicators of Compromise

• Suspicious HTTP requests containing path traversal sequences (../, ..%2f, ..%5c) targeting the Sub-Manager Server
• Unexpected file modifications in system directories or outside the application's root path
• Anomalous process execution originating from the Lanscope Endpoint Manager service
• Creation of unauthorized files or scripts in sensitive directories

Detection Strategies

• Deploy web application firewall (WAF) rules to detect and block path traversal attempts in request parameters
• Monitor network traffic for requests containing encoded or unencoded directory traversal patterns targeting the Sub-Manager Server
• Implement file integrity monitoring (FIM) on critical system and application directories
• Review application and web server logs for unusual file access patterns or error messages indicating traversal attempts

Monitoring Recommendations

• Enable verbose logging on the Lanscope Endpoint Manager Sub-Manager Server to capture detailed request information
• Configure SIEM alerts for patterns consistent with path traversal exploitation attempts
• Monitor for unexpected changes to system files, configuration files, or executable directories
• Track process creation events from the Sub-Manager Server service for anomalous child processes

How to Mitigate CVE-2026-25785

Immediate Actions Required

• Update Lanscope Endpoint Manager Sub-Manager Server to the latest patched version as soon as available from Motex
• Restrict network access to the Sub-Manager Server to trusted IP ranges only using firewall rules
• Implement web application firewall rules to block path traversal sequences in requests
• Review server logs for evidence of prior exploitation attempts

Patch Information

Motex has released a security notice addressing this vulnerability. Organizations should consult the Motex Security Notice for official patch information and upgrade instructions. Additional technical details are available in the JVN Report JVN79096585.

Workarounds

• Implement strict network segmentation to limit exposure of the Sub-Manager Server to only necessary internal networks
• Deploy a reverse proxy with input validation rules to filter malicious path traversal patterns before requests reach the server
• Apply principle of least privilege to the service account running the Sub-Manager Server to minimize impact of potential exploitation
• Consider taking the Sub-Manager Server offline temporarily until the official patch can be applied in high-risk environments