CVE-2018-18858

What it is

Multiple local privilege escalation vulnerabilities have been identified in the LiquidVPN client through 1.37 for macOS. An attacker can communicate with an unprotected XPC service and directly execute arbitrary OS commands as root or load a potentially malicious kernel extension because com.smr.liquidvpn.OVPNHelper uses the system function to execute the "tun_path" or "tap_path" pathname within a shell command.

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.

Exploit odds

1.6% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2018-11-20 19:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 01:48 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.6% in the next 30 days (EPSS).
• Severity: 7.8 HIGH (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2018-11-20 19:29 UTC

Last modified

2026-06-17 01:48 UTC

Exploit probability

1.6% · EPSS, next 30 days

Weakness

CWE-78 · OS command injection

Record status

Modified

Affected

• Liquidvpn ≤ 1.37

Attack profile CVSS 3.0 · 7.8

Attack vector

Local

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2018-18858.md and follow it. Check whether this project is affected by CVE-2018-18858. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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