CVE-2018-18858

HIGH

LiquidVPN < 1.37 - Local Privilege Escalation via Unprotected XPC Service

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-18858. PoCs published by Bernd Leitner.

AI-analyzed exploit summary The exploit demonstrates multiple privilege escalation vulnerabilities in LiquidVPN for macOS via an XPC service that fails to filter incoming messages. It includes PoC code for arbitrary command execution, command injection, and loading arbitrary kernel extensions.

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 "tun_path" or "tap_path" pathname within a shell command.

Exploits (1)

exploitdb WORKING POC
by Bernd Leitner · clocalmacos
https://www.exploit-db.com/exploits/45782

The exploit demonstrates multiple privilege escalation vulnerabilities in LiquidVPN for macOS via an XPC service that fails to filter incoming messages. It includes PoC code for arbitrary command execution, command injection, and loading arbitrary kernel extensions.

Classification
Working Poc 100%
Attack Type
Lpe
Complexity
Trivial
Reliability
Reliable
Target: LiquidVPN for MacOS versions 1.37, 1.36 and earlier
No auth needed
Prerequisites: Local access to the system · LiquidVPN installed
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/45782/
Exploit, Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2018/Nov/1

Scores

CVSS v3 7.8
EPSS 0.0050
EPSS Percentile 66.4%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-78
Status published
Products (1)
liquidvpn/liquidvpn < 1.37
Published Nov 20, 2018
Tracked Since Feb 18, 2026