Is CVE-2018-5717 actively exploited?

No active exploitation of CVE-2018-5717 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-5717 be exploited remotely?

Yes. CVE-2018-5717 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-5717?

CVE-2018-5717 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2018-5717

CWE-787Published: March 20, 2018· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

Memory write mechanism in NCR S2 Dispenser controller before firmware version 0x0108 allows an unauthenticated user to upgrade or downgrade the firmware of the device, including to older versions with known vulnerabilities.

NVD Source

Technical Analysis

CVE-2018-5717 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 full integrity compromise (data manipulation), with a CVSS base score of 7.5.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.