CVE-2018-15490

Name: CVE-2018-15490
Creator: NVD / NIST
Published: 2019-01-02T18:29:00.653+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.61%

Last modified Jun 17, 2026

CVE-2018-15490 is a vulnerability of currently unknown severity. An issue was discovered in ExpressVPN on Windows. The Xvpnd.exe process (which runs as a service with SYSTEM privileges) listens on TCP port 2015, which is used as an RPC interface for communication with the client side of the ExpressVPN application. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

An issue was discovered in ExpressVPN on Windows. The Xvpnd.exe process (which runs as a service with SYSTEM privileges) listens on TCP port 2015, which is used as an RPC interface for communication with the client side of the ExpressVPN application. A JSON-RPC protocol over HTTP is used for communication. The JSON-RPC XVPN.GetPreference and XVPN.SetPreference methods are vulnerable to path traversal, and allow reading and writing files on the file system on behalf of the service.

Metrics

EPSS Probability

0.61%

44.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Expressvpn	Expressvpn	All versions

References

Timeline

Published: Jan 2, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-15490?

How severe is CVE-2018-15490?

Severity scoring for CVE-2018-15490 is pending analysis. The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.

How do I fix CVE-2018-15490?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-15490?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST