CVE-2018-18857
CVSS v3
7.8
HIGH
EPSS Score
1.6 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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 "command_line" parameter as a shell command.
Technical details
- Published
- 2018-11-20
- Exploit-DB
- EDB-45782
Frequently asked questions
What is CVE-2018-18857?
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 "command_line" parameter as a shell command.
Is CVE-2018-18857 actively exploited?
Active exploitation of CVE-2018-18857 has not been confirmed. Its EPSS score was 1.6% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-18857?
CVE-2018-18857 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2018-18857 affecting your environment?
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