Is CVE-2018-6342 actively exploited?

No active exploitation of CVE-2018-6342 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-6342 be exploited remotely?

Yes. CVE-2018-6342 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-6342?

CVE-2018-6342 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2018-6342

CRITICAL

CVE-2018-6342

CWE-78Published: December 31, 2018· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

react-dev-utils on Windows allows developers to run a local webserver for accepting various commands, including a command to launch an editor. The input to that command was not properly sanitized, allowing an attacker who can make a network request to the server (either via CSRF or by direct request) to execute arbitrary commands on the targeted system. This issue affects multiple branches: 1.x.x prior to 1.0.4, 2.x.x prior to 2.0.2, 3.x.x prior to 3.1.2, 4.x.x prior to 4.2.2, and 5.x.x prior to 5.0.2.

NVD Source

Technical Analysis

CVE-2018-6342 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.