Is CVE-2018-1000217 actively exploited?

No active exploitation of CVE-2018-1000217 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-1000217 be exploited remotely?

Yes. CVE-2018-1000217 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-1000217?

CVE-2018-1000217 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2018-1000217

CWE-416Published: August 20, 2018· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Dave Gamble cJSON version 1.7.3 and earlier contains a CWE-416: Use After Free vulnerability in cJSON library that can result in Possible crash, corruption of data or even RCE. This attack appear to be exploitable via Depends on how application uses cJSON library. If application provides network interface then can be exploited over a network, otherwise just local.. This vulnerability appears to have been fixed in 1.7.4.

NVD Source

Technical Analysis

CVE-2018-1000217 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.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.