CVE-2023-30237Public exploit

Local privilege escalation via argument-filter bypass

Published May 9, 2023 · Updated Jul 9, 2026

Command injection in CyberGhostVPN Windows Client before 8.3.10.10015 allows local users to execute code with SYSTEM privileges. ConnectToVpnServer concatenates the JSON ServerIp value into an OpenVPN command line, while inconsistent parsing of escaped quotes and an embedded null lets a blocked plugin argument reach OpenVPN and load an attacker-controlled DLL. Exploitation requires local access and bypassing the named-pipe origin check by spoofing the client process name or injecting code into Dashboard.exe.

CVSS severity7.8
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in CyberGhostVPN Windows Client before 8.3.10.10015 allows local users to execute code with SYSTEM privileges. ConnectToVpnServer concatenates the JSON ServerIp value into an OpenVPN command line, while inconsistent parsing of escaped quotes and an embedded null lets a blocked plugin argument reach OpenVPN and load an attacker-controlled DLL. Exploitation requires local access and bypassing the named-pipe origin check by spoofing the client process name or injecting code into Dashboard.exe.

The record

CVE
CVE-2023-30237
Published
May 9, 2023
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-427, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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