Multiple local privilege escalation vulnerabilities have been identified in the LiquidVPN client through 1.37 for macOS.

published 2018-11-20 7y ago modified 2026-06-17 4mo ago also EUVD-2018-10567

cvss: 7.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.6%; EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits: 1; Exploit-DB

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.

Is CVE-2018-18856 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Timeline

2018-11-05 First public exploit (EDB-45782)
2018-11-20 Published

Exploit prediction

1.61% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

EDB-45782 LiquidVPN 1.36 / 1.37 - Privilege Escalation local, 2018-11-05
packetstormsecurity.com http://packetstormsecurity.com/files/150137/LiquidVPN-For-macOS-1.3.7-Privilege-Escalation.html referenced PoC, tagged "exploit" by a source, unverified
seclists.org http://seclists.org/fulldisclosure/2018/Nov/1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.8	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.2	AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

exploit-db.com /exploits/45782/
exploit, third-party-advisory, vdb-entry
packetstormsecurity.com /files/150137/LiquidVPN-For-macOS-1.3.7-Privilege-Escalation.html
exploit, third-party-advisory, vdb-entry
seclists.org /fulldisclosure/2018/Nov/1
mailing-list, exploit, third-party-advisory

Sources

CVE List CVE-2018-18856
NVD CVE-2018-18856

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.