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CVE Record

CVE-2018-10646: CyberGhost 6.5.0.3180 for Windows suffers from a SYSTEM privilege escalation vulnerability through the "CG6...

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.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CyberGhost 6.5.0.3180 for Windows exposes a service pathway that can let a local application run code as SYSTEM. That means a compromised user account or malicious installed app could potentially gain full control of the Windows host where this version is installed.

Executive priority

Treat as high priority if this CyberGhost version exists in the estate. It can turn a local foothold into full Windows system control, but urgency depends on confirmed deployment because sources name only one old version.

Technical view

The CG6Service service exposes a NetNamedPipe endpoint with public methods. The ConnectToVpnServer method accepts connection parameters that influence the OpenVPN command line, including a dynamic library plugin executed during VPN connection attempts in the SYSTEM context.

Likely exposure

Exposure is limited to Windows systems running CyberGhost 6.5.0.3180. The bundle does not establish broader affected versions or supported patched versions.

Exploitation context

The sources do not report known active exploitation or CISA KEV listing. The issue appears to require local application access on an affected Windows host, making it most relevant for post-compromise privilege escalation.

Researcher notes

Evidence is strong for the reported mechanism but incomplete for CVSS, CWE, affected-version range, patch status, and exploitation in the wild. Avoid assuming impact beyond CyberGhost 6.5.0.3180 for Windows without vendor confirmation.

Mitigation direction

  • Inventory Windows endpoints for CyberGhost 6.5.0.3180.
  • Check CyberGhost or vendor guidance for fixed builds or removal advice.
  • Remove the vulnerable version where business use is not required.
  • Restrict local software installation rights on endpoints.
  • Monitor VPN service behavior for suspicious child processes or plugin use.

Validation and detection

  • Confirm whether CG6Service exists on Windows endpoints.
  • Verify installed CyberGhost version equals 6.5.0.3180.
  • Review endpoint telemetry for unusual activity tied to VPN connection attempts.
  • Check whether vendor guidance identifies a remediated version.
  • Prioritize validation on shared workstations and high-privilege user endpoints.
Prepared
Confidence
medium
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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Privilege behavior lookup

The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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CVE-2018-10646 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.