Is CVE-2018-10381 actively exploited?

No active exploitation of CVE-2018-10381 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-10381 be exploited remotely?

Yes. CVE-2018-10381 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-10381?

CVE-2018-10381 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2018-10381

CRITICAL

CVE-2018-10381

CWE-732Published: April 26, 2018· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

TunnelBear 3.2.0.6 for Windows suffers from a SYSTEM privilege escalation vulnerability through the "TunnelBearMaintenance" service. This service establishes a NetNamedPipe endpoint that allows arbitrary installed applications to connect and call publicly exposed methods. The "OpenVPNConnect" method accepts a server list argument that provides attacker control of the OpenVPN command line. An attacker can specify a dynamic library plugin that should run for every new VPN connection attempt. This plugin will execute code in the context of the SYSTEM user.

NVD Source

Technical Analysis

CVE-2018-10381 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.