Is CVE-2016-9031 actively exploited?

No active exploitation of CVE-2016-9031 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2016-9031 be exploited remotely?

No. CVE-2016-9031 requires local access to exploit.

What is the CVSS score of CVE-2016-9031?

CVE-2016-9031 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2016-9031

CWE-190Published: December 14, 2016· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

An exploitable integer overflow exists in the Joyent SmartOS 20161110T013148Z Hyprlofs file system. The vulnerability is present in the Ioctl system call with the command HYPRLOFS_ADD_ENTRIES when dealing with 32-bit file systems. An attacker can craft an input that can cause a kernel panic and potentially be leveraged into a full privilege escalation vulnerability. This vulnerability is distinct from CVE-2016-8733.

NVD Source

Technical Analysis

CVE-2016-9031 requires local access, meaning attackers must already have a foothold on the target system.

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 7.8.

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.