Is CVE-2017-16340 actively exploited?

No active exploitation of CVE-2017-16340 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-16340 be exploited remotely?

Yes. CVE-2017-16340 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-16340?

CVE-2017-16340 has a CVSS score of 9.9 (CRITICAL).

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CRITICAL

CVE-2017-16340

CWE-120Published: August 2, 2018· Updated: Jun 17, 2026

9.9

CVSS v3.1

Official Description

An attacker could send an authenticated HTTP request to trigger this vulnerability in Insteon Hub running firmware version 1012. At 0x9d01c0e8 the value for the s_dport key is copied using strcpy to the buffer at 0xa000180c. This buffer is 6 bytes large, sending anything longer will cause a buffer overflow.

NVD Source

Technical Analysis

CVE-2017-16340 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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 9.9.

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.