Is CVE-2017-14855 actively exploited?

No active exploitation of CVE-2017-14855 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-14855 be exploited remotely?

Yes. CVE-2017-14855 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-14855?

CVE-2017-14855 has a CVSS score of 8.6 (HIGH).

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HIGH

CVE-2017-14855

NVD-CWE-noinfoPublished: December 30, 2017· Updated: Jun 17, 2026

8.6

CVSS v3.1

Official Description

Red Lion HMI panels allow remote attackers to cause a denial of service (software exception) via an HTTP POST request to a long URI that does not exist, as demonstrated by version HMI 2.41 PLC 2.42.

NVD Source

Technical Analysis

CVE-2017-14855 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 8.6.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.