CVE-2018-10381
9.8
CRITICAL · CVSS 3.0 · EPSS 3.8% (pctl 90)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 3.78% — more likely to be exploited than 90% of all CVEs |
| Weakness | CWE-732 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2018-04-26 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| mcafee | tunnelbear |
References
→ the Explorer · watch your stack · NVD