HIGH

CVE-2018-18856

CVSS v3

7.8

HIGH

EPSS Score

1.6 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2018-18856 yet.

Full record on NVD

Description

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 "openvpncmd" parameter as a shell command.

Technical details

Published: 2018-11-20
Exploit-DB: EDB-45782

Frequently asked questions

What is CVE-2018-18856?

Is CVE-2018-18856 actively exploited?

Active exploitation of CVE-2018-18856 has not been confirmed. Its EPSS score was 1.6% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-18856?

CVE-2018-18856 has a CVSS v3 base score of 7.8 (HIGH severity).

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