How severe is CVE-2018-10646?

CVE-2018-10646 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-10646 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-10646?

CVE-2018-10646 affects Cyberghostvpn Cyberghost. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-10646?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-10646 published?

CVE-2018-10646 was published on 2018-05-02 and last updated on 2026-06-17.

CVE-2018-10646

CVE-2018-10646 is a high-severity vulnerability in Cyberghostvpn Cyberghost with a CVSS 3.x base score of 7.8. 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: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Cyberghostvpn Cyberghost
Published: 2018-05-02
Last modified: 2026-06-17

Description

CyberGhost 6.5.0.3180 for Windows suffers from a SYSTEM privilege escalation vulnerability through the "CG6Service" service. This service establishes a NetNamedPipe endpoint that allows arbitrary installed applications to connect and call publicly exposed methods. The "ConnectToVpnServer" method accepts a "connectionParams" 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-2018-10646?: CyberGhost 6.5.0.3180 for Windows suffers from a SYSTEM privilege escalation vulnerability through the "CG6Service" service. This service establishes a NetNamedPipe endpoint that allows arbitrary installed applications to connect and call publicly exposed methods. The "ConnectToVpnServer" method accepts a "connectionParams" 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-2018-10646?: CVE-2018-10646 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-10646 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-10646?: CVE-2018-10646 affects Cyberghostvpn Cyberghost. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-10646?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-10646 published?: CVE-2018-10646 was published on 2018-05-02 and last updated on 2026-06-17.

References

https://github.com/VerSprite/research/blob/master/advisories/VS-2018-023.md

Affected products (1)

cpe:2.3:a:cyberghostvpn:cyberghost:6.5.0.3180:*:*:*:*:windows:*:*

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