CVE-2018-10381
CVE-2018-10381 is a critical-severity vulnerability in Mcafee Tunnelbear with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-732.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 10.0
- EPSS exploit prediction: 4% (88th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-732
- Affected product: Mcafee Tunnelbear
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2018-10381?
- 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.
- How severe is CVE-2018-10381?
- CVE-2018-10381 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-10381 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-10381?
- CVE-2018-10381 affects Mcafee Tunnelbear. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-10381?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2018-10381 published?
- CVE-2018-10381 was published on 2018-04-26 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:mcafee:tunnelbear:3.2.0.6:*:*:*:*:windows:*:*
Other CWE-732 (Incorrect Permission Assignment for Critical Resource) vulnerabilities
- CVE-2026-9508 — Critical (CVSS 10.0): Incorrect permission settings on a critical resource in Suprema BioStar 2 (versions 2.9.3 through 2.9.11) that allow…
- CVE-2025-14988 — Critical (CVSS 10.0): A security issue has been identified in ibaPDA that could allow unauthorized actions on the file system under certain…
- CVE-2025-69426 — Critical (CVSS 10.0): The Ruckus vRIoT IoT Controller firmware versions prior to 3.0.0.0 (GA) contain hardcoded credentials for an operating…
- CVE-2025-12004 — Critical (CVSS 10.0): Incorrect Permission Assignment for Critical Resource vulnerability in The Wikimedia Foundation Mediawiki - Lockdown…
- CVE-2014-125121 — Critical (CVSS 10.0): Array Networks vAPV (version 8.3.2.17) and vxAG (version 9.2.0.34) appliances are affected by a privilege escalation…
- CVE-2025-46093 — Critical (CVSS 9.9): LiquidFiles before 4.1.2 supports FTP SITE CHMOD for mode 6777 (setuid and setgid), which allows FTPDrop users to…
Browse all CWE-732 (Incorrect Permission Assignment for Critical Resource) vulnerabilities →