Is CVE-2018-11423 actively exploited?

No active exploitation of CVE-2018-11423 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-11423 be exploited remotely?

Yes. CVE-2018-11423 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-11423?

CVE-2018-11423 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2018-11423

CWE-119Published: July 3, 2019· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

There is Memory corruption in the web interface Moxa OnCell G3100-HSPA Series version 1.6 Build 17100315 and prior, different vulnerability than CVE-2018-11420.

NVD Source

Technical Analysis

CVE-2018-11423 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 availability disruption (denial of service), with a CVSS base score of 7.5.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.